From 0ff2902587298e6c43e0eabbd2f6a200766d84a7 Mon Sep 17 00:00:00 2001
From: Jake Hamilton <jake.hamilton@hey.com>
Date: Wed, 5 Jun 2024 15:16:52 -0700
Subject: [PATCH] feat: add mes, mes-libs, and nyacc

---
 foundation/flake.nix                          |    8 +
 foundation/src/builders/file/text/default.nix |    9 +-
 foundation/src/exports/default.nix            |   39 +-
 foundation/src/stages/stage1/default.nix      |   19 +-
 foundation/src/stages/stage1/mes/compiler.nix |  109 ++
 .../src/stages/stage1/mes/create-sources.sh   |   99 ++
 foundation/src/stages/stage1/mes/default.nix  |   27 +-
 foundation/src/stages/stage1/mes/libs.nix     |  238 ++++
 foundation/src/stages/stage1/mes/sources.nix  | 1060 +++++++++++++++++
 .../src/stages/stage1/nyacc/default.nix       |    3 +-
 foundation/src/system/default.nix             |    1 +
 11 files changed, 1589 insertions(+), 23 deletions(-)
 create mode 100644 foundation/src/stages/stage1/mes/compiler.nix
 create mode 100755 foundation/src/stages/stage1/mes/create-sources.sh
 create mode 100644 foundation/src/stages/stage1/mes/libs.nix
 create mode 100644 foundation/src/stages/stage1/mes/sources.nix

diff --git a/foundation/flake.nix b/foundation/flake.nix
index e8c5694..16e5550 100644
--- a/foundation/flake.nix
+++ b/foundation/flake.nix
@@ -19,6 +19,14 @@
       # "aarch64-darwin"
     ];
   in {
+    extras = let
+      result = lib.modules.run {
+        modules =
+          builtins.attrValues modules;
+      };
+    in
+      result.config.exports.resolved.extras;
+
     packages = forEachSystem (
       system: let
         result = lib.modules.run {
diff --git a/foundation/src/builders/file/text/default.nix b/foundation/src/builders/file/text/default.nix
index 88f6e4c..f8c35d5 100644
--- a/foundation/src/builders/file/text/default.nix
+++ b/foundation/src/builders/file/text/default.nix
@@ -24,7 +24,6 @@ in {
         extras ? {},
         ...
       }: let
-        source = builtins.toFile "source" contents;
         script =
           ''
             target=''${out}''${destination}
@@ -33,17 +32,19 @@ in {
             mkdir -p ''${out}''${destinationDir}
           ''
           + ''
-            cp ${source} ''${target}
+            cp ''${contentsPath} ''${target}
           ''
           + lib.strings.when isExecutable ''
             chmod 555 ''${target}
           '';
         package = builtins.derivation (
-          (builtins.removeAttrs settings ["meta" "extras" "contents" "executable" "isExecutable"])
+          (builtins.removeAttrs settings ["meta" "extras" "executable" "isExecutable"])
           // {
-            inherit name system destination;
+            inherit name system destination contents;
             destinationDir = builtins.dirOf destination;
 
+            passAsFile = ["contents"];
+
             builder = "${stage0.kaem.package}/bin/kaem";
 
             args = [
diff --git a/foundation/src/exports/default.nix b/foundation/src/exports/default.nix
index 902bce8..9093897 100644
--- a/foundation/src/exports/default.nix
+++ b/foundation/src/exports/default.nix
@@ -8,31 +8,40 @@
 
       type = lib.types.attrs.of lib.types.package;
     };
+
+    extras = lib.options.create {
+      default.value = {};
+      type = lib.types.attrs.any;
+    };
   };
 in {
   options = {
     exports = {
-      inherit (options) packages;
+      inherit (options) packages extras;
 
       resolved = {
-        inherit (options) packages;
+        inherit (options) packages extras;
       };
     };
   };
 
   config = {
-    exports.resolved =
-      builtins.mapAttrs (
-        name: value:
-          lib.attrs.filter
-          (
-            name: value:
-              if value ? meta && value.meta ? platforms
-              then builtins.elem config.aux.system value.meta.platforms
-              else true
-          )
-          value
-      )
-      (builtins.removeAttrs config.exports ["resolved"]);
+    exports.resolved = {
+      packages =
+        builtins.mapAttrs (
+          name: value:
+            lib.attrs.filter
+            (
+              name: value:
+                if value ? meta && value.meta ? platforms
+                then builtins.elem config.aux.system value.meta.platforms
+                else true
+            )
+            value
+        )
+        config.exports.packages;
+
+      extras = config.exports.extras;
+    };
   };
 }
diff --git a/foundation/src/stages/stage1/default.nix b/foundation/src/stages/stage1/default.nix
index 7157d33..c25a027 100644
--- a/foundation/src/stages/stage1/default.nix
+++ b/foundation/src/stages/stage1/default.nix
@@ -3,16 +3,31 @@
   config,
 }: let
   cfg = config.aux.foundation.stages.stage1;
+
+  stage1 = config.aux.foundation.stages.stage1;
 in {
   includes = [
     ./nyacc
-    # ./mes
+    ./mes
   ];
 
   config = {
     exports = {
       packages = {
-        stage1-nyacc = config.aux.foundation.stages.stage1.nyacc.package;
+        stage1-nyacc = stage1.nyacc.package;
+        stage1-mes = stage1.mes.compiler.package;
+        stage1-mes-libs = stage1.mes.libs.package;
+      };
+
+      extras = {
+        stage1 = {
+          mes = {
+            src = stage1.mes.src;
+            libs = {
+              prefix = stage1.mes.libs.prefix;
+            };
+          };
+        };
       };
     };
   };
diff --git a/foundation/src/stages/stage1/mes/compiler.nix b/foundation/src/stages/stage1/mes/compiler.nix
new file mode 100644
index 0000000..6211efe
--- /dev/null
+++ b/foundation/src/stages/stage1/mes/compiler.nix
@@ -0,0 +1,109 @@
+{
+  lib,
+  config,
+}: let
+  cfg = config.aux.foundation.stages.stage1.mes.compiler;
+
+  system = config.aux.system;
+  builders = config.aux.foundation.builders;
+
+  stage0 = config.aux.foundation.stages.stage0;
+  stage1 = config.aux.foundation.stages.stage1;
+in {
+  options.aux.foundation.stages.stage1.mes.compiler = {
+    package = lib.options.create {
+      type = lib.types.package;
+      description = "The package to use for the mes compiler.";
+    };
+
+    meta = {
+      description = lib.options.create {
+        type = lib.types.string;
+        description = "Description for the package.";
+        default.value = "Scheme interpreter and C compiler for bootstrapping.";
+      };
+
+      homepage = lib.options.create {
+        type = lib.types.string;
+        description = "Homepage for the package.";
+        default.value = "https://www.gnu.org/software/mes";
+      };
+
+      license = lib.options.create {
+        # TODO: Add a proper type for licenses.
+        type = lib.types.attrs.any;
+        description = "License for the package.";
+        default.value = lib.licenses.gpl3Plus;
+      };
+
+      platforms = lib.options.create {
+        type = lib.types.list.of lib.types.string;
+        description = "Platforms the package supports.";
+        default.value = ["i686-linux"];
+      };
+    };
+  };
+
+  config = {
+    aux.foundation.stages.stage1.mes.compiler = {
+      package = let
+        compile = path: let
+          file = builtins.baseNameOf path;
+          fileWithoutExtension = builtins.replaceStrings [".c"] [""] file;
+
+          cc = builtins.concatStringsSep " " [
+            "${stage1.mes.libs.src.bin}/bin/mes-m2"
+            "-e"
+            "main"
+            "${stage1.mes.libs.src.bin}/bin/mescc.scm"
+            "--"
+            "-D"
+            "HAVE_CONFIG_H=1"
+            "-I"
+            "${stage1.mes.libs.prefix}/include"
+            "-I"
+            "${stage1.mes.libs.prefix}/include/linux/x86"
+          ];
+        in
+          builders.kaem.build {
+            name = fileWithoutExtension;
+
+            script = ''
+              mkdir ''${out}
+              cd ''${out}
+              ${cc} -c ${stage1.mes.libs.prefix}/${path}
+            '';
+          };
+
+        getSourcePath = suffix: source: "${source}/${source.name}${suffix}";
+
+        sources = import ./sources.nix;
+
+        files =
+          lib.strings.concatMapSep
+          " "
+          (getSourcePath ".o")
+          (builtins.map compile sources.x86.linux.mescc.mes);
+      in
+        builders.kaem.build {
+          name = "mes-${stage1.mes.version}";
+
+          meta = cfg.meta;
+
+          script = ''
+            mkdir -p ''${out}/bin
+
+            ${stage1.mes.libs.src.bin}/bin/mes-m2 -e main ${stage1.mes.libs.src.bin}/bin/mescc.scm -- \
+              -L ${stage1.mes.libs.prefix}/lib \
+              -L ${stage1.mes.libs.package}/lib \
+              -lc \
+              -lmescc \
+              -nostdlib \
+              -o ''${out}/bin/mes \
+              ${stage1.mes.libs.package}/lib/x86-mes/crt1.o \
+              ${files}
+          '';
+        };
+    };
+  };
+}
diff --git a/foundation/src/stages/stage1/mes/create-sources.sh b/foundation/src/stages/stage1/mes/create-sources.sh
new file mode 100755
index 0000000..0a006f4
--- /dev/null
+++ b/foundation/src/stages/stage1/mes/create-sources.sh
@@ -0,0 +1,99 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bash coreutils gnutar
+
+# Generate a sources.nix for a version of GNU mes. Creates lists of source files
+# from build-aux/configure-lib.sh.
+#
+# You may point this tool at a manually downloaded tarball, but more ideal is
+# using the source tarball from Nixpkgs. For example:
+#
+# MES_TARBALL="$(nix eval --raw .#extras.stage1.mes.src)"
+# ./create-sources.sh "$MES_TARBALL" > ./sources.nix
+# 
+# Alternatively, here is a one-liner:
+#
+# ./create-sources.sh "$(nix eval --raw .#extras.stage1.mes.src)" > ./sources.nix
+
+set -eu
+
+# Supported platforms
+ARCHS="x86"
+KERNELS="linux"
+COMPILERS="mescc gcc"
+
+
+format() {
+  echo "["
+  echo $* | xargs printf '      "%s"\n'
+  echo "    ]"
+}
+
+gen_sources() {
+  # Configuration variables used by configure-lib.sh
+  export mes_libc=mes
+  export mes_cpu=$1
+  export mes_kernel=$2
+  export compiler=$3
+
+  # Populate source file lists
+  source $CONFIGURE_LIB_SH
+
+  cat <<EOF
+  $mes_cpu.$mes_kernel.$compiler = {
+    libc_mini = $(format $libc_mini_SOURCES);
+    libmescc = $(format $libmescc_SOURCES);
+    libtcc1 = $(format $libtcc1_SOURCES);
+    libc = $(format $libc_SOURCES);
+    libc_tcc = $(format $libc_tcc_SOURCES);
+    libc_gnu = $(format $libc_gnu_SOURCES);
+    mes = $(format $mes_SOURCES);
+  };
+EOF
+}
+
+
+MES_TARBALL=$1
+if [ ! -f $MES_TARBALL ]; then
+    echo "Provide path to mes-x.x.x.tar.gz as first argument" >&2
+    exit 1
+fi
+echo "Generating sources.nix from $MES_TARBALL" >&2
+
+TMP=$(mktemp -d)
+cd $TMP
+echo "Workdir: $TMP" >&2
+
+echo "Extracting $MES_TARBALL" >&2
+tar --strip-components 1 -xf $MES_TARBALL
+
+CONFIGURE_LIB_SH="$TMP/build-aux/configure-lib.sh"
+if [ ! -f $CONFIGURE_LIB_SH ]; then
+    echo "Could not find mes's configure-lib.sh script at $CONFIGURE_LIB_SH" >&2
+    exit 1
+fi
+
+# Create dummy config expected by configure-lib.sh
+touch config.sh
+chmod +x config.sh
+
+
+echo "Configuring with $CONFIGURE_LIB_SH" >&2
+
+cat <<EOF
+# This file is generated by ./create-sources.sh.
+# Do not edit!
+{
+EOF
+
+for arch in $ARCHS; do
+  for kernel in $KERNELS; do
+    for compiler in $COMPILERS; do
+      gen_sources $arch $kernel $compiler
+    done
+  done
+done
+
+cat <<EOF
+}
+EOF
+
diff --git a/foundation/src/stages/stage1/mes/default.nix b/foundation/src/stages/stage1/mes/default.nix
index 7baaee0..ccc9f87 100644
--- a/foundation/src/stages/stage1/mes/default.nix
+++ b/foundation/src/stages/stage1/mes/default.nix
@@ -2,11 +2,36 @@
   lib,
   config,
 }: let
+  cfg = config.aux.foundation.stages.stage1.mes;
+
   system = config.aux.system;
   builders = config.aux.foundation.builders;
 in {
+  includes = [
+    ./compiler.nix
+    ./libs.nix
+  ];
+
+  options.aux.foundation.stages.stage1.mes = {
+    src = lib.options.create {
+      type = lib.types.package;
+      description = "Source for the package.";
+    };
+
+    version = lib.options.create {
+      type = lib.types.string;
+      description = "Version of the package.";
+    };
+  };
+
   config = {
-    aux.foundation.stages.stage0.mes = {
+    aux.foundation.stages.stage1.mes = {
+      version = "0.25";
+
+      src = builtins.fetchurl {
+        url = "https://ftpmirror.gnu.org/mes/mes-${cfg.version}.tar.gz";
+        sha256 = "MlJQs1Z+2SA7pwFhyDWvAQeec+vtl7S1u3fKUAuCiUA=";
+      };
     };
   };
 }
diff --git a/foundation/src/stages/stage1/mes/libs.nix b/foundation/src/stages/stage1/mes/libs.nix
new file mode 100644
index 0000000..9e9303a
--- /dev/null
+++ b/foundation/src/stages/stage1/mes/libs.nix
@@ -0,0 +1,238 @@
+{
+  lib,
+  config,
+}: let
+  cfg = config.aux.foundation.stages.stage1.mes.libs;
+
+  system = config.aux.system;
+  builders = config.aux.foundation.builders;
+
+  stage0 = config.aux.foundation.stages.stage0;
+  stage1 = config.aux.foundation.stages.stage1;
+in {
+  options.aux.foundation.stages.stage1.mes.libs = {
+    package = lib.options.create {
+      type = lib.types.package;
+      description = "The package to use for mes libs.";
+    };
+
+    meta = {
+      description = lib.options.create {
+        type = lib.types.string;
+        description = "Description for the package.";
+        default.value = "Scheme interpreter and C compiler for bootstrapping.";
+      };
+
+      homepage = lib.options.create {
+        type = lib.types.string;
+        description = "Homepage for the package.";
+        default.value = "https://www.gnu.org/software/mes";
+      };
+
+      license = lib.options.create {
+        # TODO: Add a proper type for licenses.
+        type = lib.types.attrs.any;
+        description = "License for the package.";
+        default.value = lib.licenses.gpl3Plus;
+      };
+
+      platforms = lib.options.create {
+        type = lib.types.list.of lib.types.string;
+        description = "Platforms the package supports.";
+        default.value = ["i686-linux"];
+      };
+    };
+
+    src = lib.options.create {
+      type = lib.types.package;
+      description = "Source for the package.";
+    };
+
+    prefix = lib.options.create {
+      type = lib.types.string;
+      description = "Prefix for the package.";
+    };
+  };
+
+  config = {
+    aux.foundation.stages.stage1.mes.libs = {
+      prefix = "${cfg.src.out}/mes-${stage1.mes.version}";
+
+      src = let
+        config_h = builtins.toFile "config.h" ''
+          #undef SYSTEM_LIBC
+          #define MES_VERSION "${stage1.mes.version}"
+        '';
+      in
+        builders.kaem.build {
+          name = "mes-src-${stage1.mes.version}";
+
+          meta = cfg.meta;
+
+          outputs = [
+            "out"
+            "bin"
+          ];
+
+          script = ''
+            # Unpack source
+            ungz --file ${stage1.mes.src} --output mes.tar
+            mkdir ''${out}
+            cd ''${out}
+            untar --non-strict --file ''${NIX_BUILD_TOP}/mes.tar # ignore symlinks
+
+            MES_PREFIX=''${out}/mes-${stage1.mes.version}
+
+            cd ''${MES_PREFIX}
+
+            cp ${config_h} include/mes/config.h
+
+            mkdir include/arch
+            cp include/linux/x86/syscall.h include/arch/syscall.h
+            cp include/linux/x86/kernel-stat.h include/arch/kernel-stat.h
+
+            # Remove pregenerated files
+            rm mes/module/mes/psyntax.pp mes/module/mes/psyntax.pp.header
+
+            # These files are symlinked in the repo
+            cp mes/module/srfi/srfi-9-struct.mes mes/module/srfi/srfi-9.mes
+            cp mes/module/srfi/srfi-9/gnu-struct.mes mes/module/srfi/srfi-9/gnu.mes
+
+            # Remove environment impurities
+            __GUILE_LOAD_PATH="\"''${MES_PREFIX}/mes/module:''${MES_PREFIX}/module:${stage1.nyacc.package.extras.guileModule}\""
+            boot0_scm=mes/module/mes/boot-0.scm
+            guile_mes=mes/module/mes/guile.mes
+            replace --file ''${boot0_scm} --output ''${boot0_scm} --match-on "(getenv \"GUILE_LOAD_PATH\")" --replace-with ''${__GUILE_LOAD_PATH}
+            replace --file ''${guile_mes} --output ''${guile_mes} --match-on "(getenv \"GUILE_LOAD_PATH\")" --replace-with ''${__GUILE_LOAD_PATH}
+
+            module_mescc_scm=module/mescc/mescc.scm
+            replace --file ''${module_mescc_scm} --output ''${module_mescc_scm} --match-on "(getenv \"M1\")" --replace-with "\"${stage0.mescc-tools.package}/bin/M1\""
+            replace --file ''${module_mescc_scm} --output ''${module_mescc_scm} --match-on "(getenv \"HEX2\")" --replace-with "\"${stage0.mescc-tools.package}/bin/hex2\""
+            replace --file ''${module_mescc_scm} --output ''${module_mescc_scm} --match-on "(getenv \"BLOOD_ELF\")" --replace-with "\"${stage0.mescc-tools.package}/bin/blood-elf\""
+            replace --file ''${module_mescc_scm} --output ''${module_mescc_scm} --match-on "(getenv \"srcdest\")" --replace-with "\"''${MES_PREFIX}\""
+
+            mes_c=src/mes.c
+            replace --file ''${mes_c} --output ''${mes_c} --match-on "getenv (\"MES_PREFIX\")" --replace-with "\"''${MES_PREFIX}\""
+            replace --file ''${mes_c} --output ''${mes_c} --match-on "getenv (\"srcdest\")" --replace-with "\"''${MES_PREFIX}\""
+
+            # Increase runtime resource limits
+            gc_c=src/gc.c
+            replace --file ''${gc_c} --output ''${gc_c} --match-on "getenv (\"MES_ARENA\")" --replace-with "\"100000000\""
+            replace --file ''${gc_c} --output ''${gc_c} --match-on "getenv (\"MES_MAX_ARENA\")" --replace-with "\"100000000\""
+            replace --file ''${gc_c} --output ''${gc_c} --match-on "getenv (\"MES_STACK\")" --replace-with "\"6000000\""
+
+            # Create mescc.scm
+            mescc_in=scripts/mescc.scm.in
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on "(getenv \"MES_PREFIX\")" --replace-with "\"''${MES_PREFIX}\""
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on "(getenv \"includedir\")" --replace-with "\"''${MES_PREFIX}/include\""
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on "(getenv \"libdir\")" --replace-with "\"''${MES_PREFIX}/lib\""
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on @prefix@ --replace-with ''${MES_PREFIX}
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on @VERSION@ --replace-with ${stage1.mes.version}
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on @mes_cpu@ --replace-with x86
+            replace --file ''${mescc_in} --output ''${mescc_in} --match-on @mes_kernel@ --replace-with linux
+            mkdir -p ''${bin}/bin
+            cp ''${mescc_in} ''${bin}/bin/mescc.scm
+
+            # Build mes-m2
+            kaem --verbose --strict --file kaem.x86
+            cp bin/mes-m2 ''${bin}/bin/mes-m2
+            chmod 555 ''${bin}/bin/mes-m2
+          '';
+        };
+
+      package = let
+        compile = path: let
+          file = builtins.baseNameOf path;
+          fileWithoutExtension = builtins.replaceStrings [".c"] [""] file;
+
+          cc = builtins.concatStringsSep " " [
+            "${cfg.src.bin}/bin/mes-m2"
+            "-e"
+            "main"
+            "${cfg.src.bin}/bin/mescc.scm"
+            "--"
+            "-D"
+            "HAVE_CONFIG_H=1"
+            "-I"
+            "${cfg.prefix}/include"
+            "-I"
+            "${cfg.prefix}/include/linux/x86"
+          ];
+        in
+          builders.kaem.build {
+            name = fileWithoutExtension;
+
+            script = ''
+              mkdir ''${out}
+              cd ''${out}
+              ${cc} -c ${cfg.prefix}/${path}
+            '';
+          };
+
+        getSourcePath = suffix: source: "${source}/${source.name}${suffix}";
+
+        archive = destination: sources: "catm ${destination} ${lib.strings.concatMapSep " " (getSourcePath ".o") sources}";
+        source = destination: sources: "catm ${destination} ${lib.strings.concatMapSep " " (getSourcePath ".s") sources}";
+
+        createLib = name: sources: let
+          compiled = builtins.map compile sources;
+        in
+          builders.kaem.build {
+            name = "mes-${name}-${stage1.mes.version}";
+
+            meta = cfg.meta;
+
+            script = ''
+              LIBDIR=''${out}/lib
+              mkdir -p ''${LIBDIR}
+              cd ''${LIBDIR}
+
+              ${archive "${name}.a" compiled}
+              ${source "${name}.s" compiled}
+
+            '';
+          };
+
+        sources = import ./sources.nix;
+
+        crt1 = compile "lib/linux/x86-mes-mescc/crt1.c";
+        libc-mini = createLib "libc-mini" sources.x86.linux.mescc.libc_mini;
+        libmescc = createLib "libmescc" sources.x86.linux.mescc.libmescc;
+        libc = createLib "libc" sources.x86.linux.mescc.libc;
+        libc_tcc = createLib "libc+tcc" (sources.x86.linux.mescc.libc_tcc ++ ["lib/linux/symlink.c"]);
+      in
+        builders.kaem.build {
+          name = "mes-m2-libs-${stage1.mes.version}";
+
+          meta = cfg.meta;
+
+          script = ''
+            LIBDIR=''${out}/lib
+            mkdir -p ''${out} ''${LIBDIR}
+
+            mkdir -p ''${LIBDIR}/x86-mes
+
+            # crt1.o
+            cp ${crt1}/crt1.o ''${LIBDIR}/x86-mes
+            cp ${crt1}/crt1.s ''${LIBDIR}/x86-mes
+
+            # libc-mini.a
+            cp ${libc-mini}/lib/libc-mini.a ''${LIBDIR}/x86-mes
+            cp ${libc-mini}/lib/libc-mini.s ''${LIBDIR}/x86-mes
+
+            # libmescc.a
+            cp ${libmescc}/lib/libmescc.a ''${LIBDIR}/x86-mes
+            cp ${libmescc}/lib/libmescc.s ''${LIBDIR}/x86-mes
+
+            # libc.a
+            cp ${libc}/lib/libc.a ''${LIBDIR}/x86-mes
+            cp ${libc}/lib/libc.s ''${LIBDIR}/x86-mes
+
+            # libc+tcc.a
+            cp ${libc_tcc}/lib/libc+tcc.a ''${LIBDIR}/x86-mes
+            cp ${libc_tcc}/lib/libc+tcc.s ''${LIBDIR}/x86-mes
+          '';
+        };
+    };
+  };
+}
diff --git a/foundation/src/stages/stage1/mes/sources.nix b/foundation/src/stages/stage1/mes/sources.nix
new file mode 100644
index 0000000..5c247c3
--- /dev/null
+++ b/foundation/src/stages/stage1/mes/sources.nix
@@ -0,0 +1,1060 @@
+# This file is generated by ./create-sources.sh.
+# Do not edit!
+{
+  x86.linux.mescc = {
+    libc_mini = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-mescc/_exit.c"
+      "lib/linux/x86-mes-mescc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/mes/write.c"
+    ];
+    libmescc = [
+      "lib/mes/globals.c"
+      "lib/linux/x86-mes-mescc/syscall-internal.c"
+    ];
+    libtcc1 = [
+      "lib/libtcc1.c"
+    ];
+    libc = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-mescc/_exit.c"
+      "lib/linux/x86-mes-mescc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-mescc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+    ];
+    libc_tcc = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-mescc/_exit.c"
+      "lib/linux/x86-mes-mescc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-mescc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+      "lib/ctype/islower.c"
+      "lib/ctype/isupper.c"
+      "lib/ctype/tolower.c"
+      "lib/ctype/toupper.c"
+      "lib/mes/abtod.c"
+      "lib/mes/dtoab.c"
+      "lib/mes/search-path.c"
+      "lib/posix/execvp.c"
+      "lib/stdio/fclose.c"
+      "lib/stdio/fdopen.c"
+      "lib/stdio/ferror.c"
+      "lib/stdio/fflush.c"
+      "lib/stdio/fopen.c"
+      "lib/stdio/fprintf.c"
+      "lib/stdio/fread.c"
+      "lib/stdio/fseek.c"
+      "lib/stdio/ftell.c"
+      "lib/stdio/fwrite.c"
+      "lib/stdio/printf.c"
+      "lib/stdio/remove.c"
+      "lib/stdio/snprintf.c"
+      "lib/stdio/sprintf.c"
+      "lib/stdio/sscanf.c"
+      "lib/stdio/vfprintf.c"
+      "lib/stdio/vprintf.c"
+      "lib/stdio/vsnprintf.c"
+      "lib/stdio/vsprintf.c"
+      "lib/stdio/vsscanf.c"
+      "lib/stdlib/calloc.c"
+      "lib/stdlib/qsort.c"
+      "lib/stdlib/strtod.c"
+      "lib/stdlib/strtof.c"
+      "lib/stdlib/strtol.c"
+      "lib/stdlib/strtold.c"
+      "lib/stdlib/strtoll.c"
+      "lib/stdlib/strtoul.c"
+      "lib/stdlib/strtoull.c"
+      "lib/string/memmem.c"
+      "lib/string/strcat.c"
+      "lib/string/strchr.c"
+      "lib/string/strlwr.c"
+      "lib/string/strncpy.c"
+      "lib/string/strrchr.c"
+      "lib/string/strstr.c"
+      "lib/string/strupr.c"
+      "lib/stub/sigaction.c"
+      "lib/stub/ldexp.c"
+      "lib/stub/mprotect.c"
+      "lib/stub/localtime.c"
+      "lib/stub/sigemptyset.c"
+      "lib/x86-mes-mescc/setjmp.c"
+      "lib/linux/close.c"
+      "lib/linux/rmdir.c"
+      "lib/linux/stat.c"
+    ];
+    libc_gnu = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-mescc/_exit.c"
+      "lib/linux/x86-mes-mescc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-mescc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+      "lib/ctype/islower.c"
+      "lib/ctype/isupper.c"
+      "lib/ctype/tolower.c"
+      "lib/ctype/toupper.c"
+      "lib/mes/abtod.c"
+      "lib/mes/dtoab.c"
+      "lib/mes/search-path.c"
+      "lib/posix/execvp.c"
+      "lib/stdio/fclose.c"
+      "lib/stdio/fdopen.c"
+      "lib/stdio/ferror.c"
+      "lib/stdio/fflush.c"
+      "lib/stdio/fopen.c"
+      "lib/stdio/fprintf.c"
+      "lib/stdio/fread.c"
+      "lib/stdio/fseek.c"
+      "lib/stdio/ftell.c"
+      "lib/stdio/fwrite.c"
+      "lib/stdio/printf.c"
+      "lib/stdio/remove.c"
+      "lib/stdio/snprintf.c"
+      "lib/stdio/sprintf.c"
+      "lib/stdio/sscanf.c"
+      "lib/stdio/vfprintf.c"
+      "lib/stdio/vprintf.c"
+      "lib/stdio/vsnprintf.c"
+      "lib/stdio/vsprintf.c"
+      "lib/stdio/vsscanf.c"
+      "lib/stdlib/calloc.c"
+      "lib/stdlib/qsort.c"
+      "lib/stdlib/strtod.c"
+      "lib/stdlib/strtof.c"
+      "lib/stdlib/strtol.c"
+      "lib/stdlib/strtold.c"
+      "lib/stdlib/strtoll.c"
+      "lib/stdlib/strtoul.c"
+      "lib/stdlib/strtoull.c"
+      "lib/string/memmem.c"
+      "lib/string/strcat.c"
+      "lib/string/strchr.c"
+      "lib/string/strlwr.c"
+      "lib/string/strncpy.c"
+      "lib/string/strrchr.c"
+      "lib/string/strstr.c"
+      "lib/string/strupr.c"
+      "lib/stub/sigaction.c"
+      "lib/stub/ldexp.c"
+      "lib/stub/mprotect.c"
+      "lib/stub/localtime.c"
+      "lib/stub/sigemptyset.c"
+      "lib/x86-mes-mescc/setjmp.c"
+      "lib/linux/close.c"
+      "lib/linux/rmdir.c"
+      "lib/linux/stat.c"
+      "lib/ctype/isalnum.c"
+      "lib/ctype/isalpha.c"
+      "lib/ctype/isascii.c"
+      "lib/ctype/iscntrl.c"
+      "lib/ctype/isgraph.c"
+      "lib/ctype/isprint.c"
+      "lib/ctype/ispunct.c"
+      "lib/dirent/__getdirentries.c"
+      "lib/dirent/closedir.c"
+      "lib/dirent/opendir.c"
+      "lib/dirent/readdir.c"
+      "lib/math/ceil.c"
+      "lib/math/fabs.c"
+      "lib/math/floor.c"
+      "lib/mes/fdgets.c"
+      "lib/posix/alarm.c"
+      "lib/posix/execl.c"
+      "lib/posix/execlp.c"
+      "lib/posix/mktemp.c"
+      "lib/posix/sbrk.c"
+      "lib/posix/sleep.c"
+      "lib/posix/unsetenv.c"
+      "lib/stdio/clearerr.c"
+      "lib/stdio/feof.c"
+      "lib/stdio/fgets.c"
+      "lib/stdio/fileno.c"
+      "lib/stdio/freopen.c"
+      "lib/stdio/fscanf.c"
+      "lib/stdio/perror.c"
+      "lib/stdio/vfscanf.c"
+      "lib/stdlib/__exit.c"
+      "lib/stdlib/abort.c"
+      "lib/stdlib/abs.c"
+      "lib/stdlib/alloca.c"
+      "lib/stdlib/atexit.c"
+      "lib/stdlib/atof.c"
+      "lib/stdlib/atol.c"
+      "lib/stdlib/mbstowcs.c"
+      "lib/string/bcmp.c"
+      "lib/string/bcopy.c"
+      "lib/string/bzero.c"
+      "lib/string/index.c"
+      "lib/string/rindex.c"
+      "lib/string/strcspn.c"
+      "lib/string/strdup.c"
+      "lib/string/strerror.c"
+      "lib/string/strncat.c"
+      "lib/string/strpbrk.c"
+      "lib/string/strspn.c"
+      "lib/stub/__cleanup.c"
+      "lib/stub/atan2.c"
+      "lib/stub/bsearch.c"
+      "lib/stub/chown.c"
+      "lib/stub/cos.c"
+      "lib/stub/ctime.c"
+      "lib/stub/exp.c"
+      "lib/stub/fpurge.c"
+      "lib/stub/freadahead.c"
+      "lib/stub/frexp.c"
+      "lib/stub/getgrgid.c"
+      "lib/stub/getgrnam.c"
+      "lib/stub/getlogin.c"
+      "lib/stub/getpgid.c"
+      "lib/stub/getpgrp.c"
+      "lib/stub/getpwnam.c"
+      "lib/stub/getpwuid.c"
+      "lib/stub/gmtime.c"
+      "lib/stub/log.c"
+      "lib/stub/mktime.c"
+      "lib/stub/modf.c"
+      "lib/stub/pclose.c"
+      "lib/stub/popen.c"
+      "lib/stub/pow.c"
+      "lib/stub/rand.c"
+      "lib/stub/rewind.c"
+      "lib/stub/setbuf.c"
+      "lib/stub/setgrent.c"
+      "lib/stub/setlocale.c"
+      "lib/stub/setvbuf.c"
+      "lib/stub/sigaddset.c"
+      "lib/stub/sigblock.c"
+      "lib/stub/sigdelset.c"
+      "lib/stub/sigsetmask.c"
+      "lib/stub/sin.c"
+      "lib/stub/sqrt.c"
+      "lib/stub/strftime.c"
+      "lib/stub/sys_siglist.c"
+      "lib/stub/system.c"
+      "lib/stub/times.c"
+      "lib/stub/ttyname.c"
+      "lib/stub/umask.c"
+      "lib/stub/utime.c"
+      "lib/linux/chdir.c"
+      "lib/linux/fcntl.c"
+      "lib/linux/fstat.c"
+      "lib/linux/getdents.c"
+      "lib/linux/getegid.c"
+      "lib/linux/geteuid.c"
+      "lib/linux/getgid.c"
+      "lib/linux/getppid.c"
+      "lib/linux/getrusage.c"
+      "lib/linux/getuid.c"
+      "lib/linux/ioctl.c"
+      "lib/linux/link.c"
+      "lib/linux/lstat.c"
+      "lib/linux/mkdir.c"
+      "lib/linux/mknod.c"
+      "lib/linux/nanosleep.c"
+      "lib/linux/pipe.c"
+      "lib/linux/readlink.c"
+      "lib/linux/rename.c"
+      "lib/linux/setgid.c"
+      "lib/linux/settimer.c"
+      "lib/linux/setuid.c"
+      "lib/linux/signal.c"
+      "lib/linux/sigprogmask.c"
+      "lib/linux/symlink.c"
+    ];
+    mes = [
+      "src/builtins.c"
+      "src/cc.c"
+      "src/core.c"
+      "src/display.c"
+      "src/eval-apply.c"
+      "src/gc.c"
+      "src/globals.c"
+      "src/hash.c"
+      "src/lib.c"
+      "src/math.c"
+      "src/mes.c"
+      "src/module.c"
+      "src/posix.c"
+      "src/reader.c"
+      "src/stack.c"
+      "src/string.c"
+      "src/struct.c"
+      "src/symbol.c"
+      "src/vector.c"
+    ];
+  };
+  x86.linux.gcc = {
+    libc_mini = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-gcc/_exit.c"
+      "lib/linux/x86-mes-gcc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/mes/write.c"
+    ];
+    libmescc = [
+      "lib/mes/globals.c"
+      "lib/linux/x86-mes-gcc/syscall-internal.c"
+    ];
+    libtcc1 = [
+      "lib/libtcc1.c"
+    ];
+    libc = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-gcc/_exit.c"
+      "lib/linux/x86-mes-gcc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-gcc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+    ];
+    libc_tcc = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-gcc/_exit.c"
+      "lib/linux/x86-mes-gcc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-gcc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+      "lib/ctype/islower.c"
+      "lib/ctype/isupper.c"
+      "lib/ctype/tolower.c"
+      "lib/ctype/toupper.c"
+      "lib/mes/abtod.c"
+      "lib/mes/dtoab.c"
+      "lib/mes/search-path.c"
+      "lib/posix/execvp.c"
+      "lib/stdio/fclose.c"
+      "lib/stdio/fdopen.c"
+      "lib/stdio/ferror.c"
+      "lib/stdio/fflush.c"
+      "lib/stdio/fopen.c"
+      "lib/stdio/fprintf.c"
+      "lib/stdio/fread.c"
+      "lib/stdio/fseek.c"
+      "lib/stdio/ftell.c"
+      "lib/stdio/fwrite.c"
+      "lib/stdio/printf.c"
+      "lib/stdio/remove.c"
+      "lib/stdio/snprintf.c"
+      "lib/stdio/sprintf.c"
+      "lib/stdio/sscanf.c"
+      "lib/stdio/vfprintf.c"
+      "lib/stdio/vprintf.c"
+      "lib/stdio/vsnprintf.c"
+      "lib/stdio/vsprintf.c"
+      "lib/stdio/vsscanf.c"
+      "lib/stdlib/calloc.c"
+      "lib/stdlib/qsort.c"
+      "lib/stdlib/strtod.c"
+      "lib/stdlib/strtof.c"
+      "lib/stdlib/strtol.c"
+      "lib/stdlib/strtold.c"
+      "lib/stdlib/strtoll.c"
+      "lib/stdlib/strtoul.c"
+      "lib/stdlib/strtoull.c"
+      "lib/string/memmem.c"
+      "lib/string/strcat.c"
+      "lib/string/strchr.c"
+      "lib/string/strlwr.c"
+      "lib/string/strncpy.c"
+      "lib/string/strrchr.c"
+      "lib/string/strstr.c"
+      "lib/string/strupr.c"
+      "lib/stub/sigaction.c"
+      "lib/stub/ldexp.c"
+      "lib/stub/mprotect.c"
+      "lib/stub/localtime.c"
+      "lib/stub/sigemptyset.c"
+      "lib/x86-mes-gcc/setjmp.c"
+      "lib/linux/close.c"
+      "lib/linux/rmdir.c"
+      "lib/linux/stat.c"
+    ];
+    libc_gnu = [
+      "lib/mes/__init_io.c"
+      "lib/mes/eputs.c"
+      "lib/mes/oputs.c"
+      "lib/mes/globals.c"
+      "lib/stdlib/exit.c"
+      "lib/linux/x86-mes-gcc/_exit.c"
+      "lib/linux/x86-mes-gcc/_write.c"
+      "lib/stdlib/puts.c"
+      "lib/string/strlen.c"
+      "lib/ctype/isnumber.c"
+      "lib/mes/abtol.c"
+      "lib/mes/cast.c"
+      "lib/mes/eputc.c"
+      "lib/mes/fdgetc.c"
+      "lib/mes/fdputc.c"
+      "lib/mes/fdputs.c"
+      "lib/mes/fdungetc.c"
+      "lib/mes/itoa.c"
+      "lib/mes/ltoa.c"
+      "lib/mes/ltoab.c"
+      "lib/mes/mes_open.c"
+      "lib/mes/ntoab.c"
+      "lib/mes/oputc.c"
+      "lib/mes/ultoa.c"
+      "lib/mes/utoa.c"
+      "lib/stub/__raise.c"
+      "lib/ctype/isdigit.c"
+      "lib/ctype/isspace.c"
+      "lib/ctype/isxdigit.c"
+      "lib/mes/assert_msg.c"
+      "lib/posix/write.c"
+      "lib/stdlib/atoi.c"
+      "lib/linux/lseek.c"
+      "lib/mes/__assert_fail.c"
+      "lib/mes/__buffered_read.c"
+      "lib/mes/__mes_debug.c"
+      "lib/posix/execv.c"
+      "lib/posix/getcwd.c"
+      "lib/posix/getenv.c"
+      "lib/posix/isatty.c"
+      "lib/posix/open.c"
+      "lib/posix/buffered-read.c"
+      "lib/posix/setenv.c"
+      "lib/posix/wait.c"
+      "lib/stdio/fgetc.c"
+      "lib/stdio/fputc.c"
+      "lib/stdio/fputs.c"
+      "lib/stdio/getc.c"
+      "lib/stdio/getchar.c"
+      "lib/stdio/putc.c"
+      "lib/stdio/putchar.c"
+      "lib/stdio/ungetc.c"
+      "lib/stdlib/free.c"
+      "lib/stdlib/realloc.c"
+      "lib/string/memchr.c"
+      "lib/string/memcmp.c"
+      "lib/string/memcpy.c"
+      "lib/string/memmove.c"
+      "lib/string/memset.c"
+      "lib/string/strcmp.c"
+      "lib/string/strcpy.c"
+      "lib/string/strncmp.c"
+      "lib/posix/raise.c"
+      "lib/linux/access.c"
+      "lib/linux/brk.c"
+      "lib/linux/chmod.c"
+      "lib/linux/clock_gettime.c"
+      "lib/linux/dup.c"
+      "lib/linux/dup2.c"
+      "lib/linux/execve.c"
+      "lib/linux/fork.c"
+      "lib/linux/fsync.c"
+      "lib/linux/_getcwd.c"
+      "lib/linux/gettimeofday.c"
+      "lib/linux/ioctl3.c"
+      "lib/linux/_open3.c"
+      "lib/linux/malloc.c"
+      "lib/linux/_read.c"
+      "lib/linux/time.c"
+      "lib/linux/unlink.c"
+      "lib/linux/wait4.c"
+      "lib/linux/waitpid.c"
+      "lib/linux/x86-mes-gcc/syscall.c"
+      "lib/linux/getpid.c"
+      "lib/linux/kill.c"
+      "lib/ctype/islower.c"
+      "lib/ctype/isupper.c"
+      "lib/ctype/tolower.c"
+      "lib/ctype/toupper.c"
+      "lib/mes/abtod.c"
+      "lib/mes/dtoab.c"
+      "lib/mes/search-path.c"
+      "lib/posix/execvp.c"
+      "lib/stdio/fclose.c"
+      "lib/stdio/fdopen.c"
+      "lib/stdio/ferror.c"
+      "lib/stdio/fflush.c"
+      "lib/stdio/fopen.c"
+      "lib/stdio/fprintf.c"
+      "lib/stdio/fread.c"
+      "lib/stdio/fseek.c"
+      "lib/stdio/ftell.c"
+      "lib/stdio/fwrite.c"
+      "lib/stdio/printf.c"
+      "lib/stdio/remove.c"
+      "lib/stdio/snprintf.c"
+      "lib/stdio/sprintf.c"
+      "lib/stdio/sscanf.c"
+      "lib/stdio/vfprintf.c"
+      "lib/stdio/vprintf.c"
+      "lib/stdio/vsnprintf.c"
+      "lib/stdio/vsprintf.c"
+      "lib/stdio/vsscanf.c"
+      "lib/stdlib/calloc.c"
+      "lib/stdlib/qsort.c"
+      "lib/stdlib/strtod.c"
+      "lib/stdlib/strtof.c"
+      "lib/stdlib/strtol.c"
+      "lib/stdlib/strtold.c"
+      "lib/stdlib/strtoll.c"
+      "lib/stdlib/strtoul.c"
+      "lib/stdlib/strtoull.c"
+      "lib/string/memmem.c"
+      "lib/string/strcat.c"
+      "lib/string/strchr.c"
+      "lib/string/strlwr.c"
+      "lib/string/strncpy.c"
+      "lib/string/strrchr.c"
+      "lib/string/strstr.c"
+      "lib/string/strupr.c"
+      "lib/stub/sigaction.c"
+      "lib/stub/ldexp.c"
+      "lib/stub/mprotect.c"
+      "lib/stub/localtime.c"
+      "lib/stub/sigemptyset.c"
+      "lib/x86-mes-gcc/setjmp.c"
+      "lib/linux/close.c"
+      "lib/linux/rmdir.c"
+      "lib/linux/stat.c"
+      "lib/ctype/isalnum.c"
+      "lib/ctype/isalpha.c"
+      "lib/ctype/isascii.c"
+      "lib/ctype/iscntrl.c"
+      "lib/ctype/isgraph.c"
+      "lib/ctype/isprint.c"
+      "lib/ctype/ispunct.c"
+      "lib/dirent/__getdirentries.c"
+      "lib/dirent/closedir.c"
+      "lib/dirent/opendir.c"
+      "lib/dirent/readdir.c"
+      "lib/math/ceil.c"
+      "lib/math/fabs.c"
+      "lib/math/floor.c"
+      "lib/mes/fdgets.c"
+      "lib/posix/alarm.c"
+      "lib/posix/execl.c"
+      "lib/posix/execlp.c"
+      "lib/posix/mktemp.c"
+      "lib/posix/sbrk.c"
+      "lib/posix/sleep.c"
+      "lib/posix/unsetenv.c"
+      "lib/stdio/clearerr.c"
+      "lib/stdio/feof.c"
+      "lib/stdio/fgets.c"
+      "lib/stdio/fileno.c"
+      "lib/stdio/freopen.c"
+      "lib/stdio/fscanf.c"
+      "lib/stdio/perror.c"
+      "lib/stdio/vfscanf.c"
+      "lib/stdlib/__exit.c"
+      "lib/stdlib/abort.c"
+      "lib/stdlib/abs.c"
+      "lib/stdlib/alloca.c"
+      "lib/stdlib/atexit.c"
+      "lib/stdlib/atof.c"
+      "lib/stdlib/atol.c"
+      "lib/stdlib/mbstowcs.c"
+      "lib/string/bcmp.c"
+      "lib/string/bcopy.c"
+      "lib/string/bzero.c"
+      "lib/string/index.c"
+      "lib/string/rindex.c"
+      "lib/string/strcspn.c"
+      "lib/string/strdup.c"
+      "lib/string/strerror.c"
+      "lib/string/strncat.c"
+      "lib/string/strpbrk.c"
+      "lib/string/strspn.c"
+      "lib/stub/__cleanup.c"
+      "lib/stub/atan2.c"
+      "lib/stub/bsearch.c"
+      "lib/stub/chown.c"
+      "lib/stub/cos.c"
+      "lib/stub/ctime.c"
+      "lib/stub/exp.c"
+      "lib/stub/fpurge.c"
+      "lib/stub/freadahead.c"
+      "lib/stub/frexp.c"
+      "lib/stub/getgrgid.c"
+      "lib/stub/getgrnam.c"
+      "lib/stub/getlogin.c"
+      "lib/stub/getpgid.c"
+      "lib/stub/getpgrp.c"
+      "lib/stub/getpwnam.c"
+      "lib/stub/getpwuid.c"
+      "lib/stub/gmtime.c"
+      "lib/stub/log.c"
+      "lib/stub/mktime.c"
+      "lib/stub/modf.c"
+      "lib/stub/pclose.c"
+      "lib/stub/popen.c"
+      "lib/stub/pow.c"
+      "lib/stub/rand.c"
+      "lib/stub/rewind.c"
+      "lib/stub/setbuf.c"
+      "lib/stub/setgrent.c"
+      "lib/stub/setlocale.c"
+      "lib/stub/setvbuf.c"
+      "lib/stub/sigaddset.c"
+      "lib/stub/sigblock.c"
+      "lib/stub/sigdelset.c"
+      "lib/stub/sigsetmask.c"
+      "lib/stub/sin.c"
+      "lib/stub/sqrt.c"
+      "lib/stub/strftime.c"
+      "lib/stub/sys_siglist.c"
+      "lib/stub/system.c"
+      "lib/stub/times.c"
+      "lib/stub/ttyname.c"
+      "lib/stub/umask.c"
+      "lib/stub/utime.c"
+      "lib/linux/chdir.c"
+      "lib/linux/fcntl.c"
+      "lib/linux/fstat.c"
+      "lib/linux/getdents.c"
+      "lib/linux/getegid.c"
+      "lib/linux/geteuid.c"
+      "lib/linux/getgid.c"
+      "lib/linux/getppid.c"
+      "lib/linux/getrusage.c"
+      "lib/linux/getuid.c"
+      "lib/linux/ioctl.c"
+      "lib/linux/link.c"
+      "lib/linux/lstat.c"
+      "lib/linux/mkdir.c"
+      "lib/linux/mknod.c"
+      "lib/linux/nanosleep.c"
+      "lib/linux/pipe.c"
+      "lib/linux/readlink.c"
+      "lib/linux/rename.c"
+      "lib/linux/setgid.c"
+      "lib/linux/settimer.c"
+      "lib/linux/setuid.c"
+      "lib/linux/signal.c"
+      "lib/linux/sigprogmask.c"
+      "lib/linux/symlink.c"
+    ];
+    mes = [
+      "src/builtins.c"
+      "src/cc.c"
+      "src/core.c"
+      "src/display.c"
+      "src/eval-apply.c"
+      "src/gc.c"
+      "src/globals.c"
+      "src/hash.c"
+      "src/lib.c"
+      "src/math.c"
+      "src/mes.c"
+      "src/module.c"
+      "src/posix.c"
+      "src/reader.c"
+      "src/stack.c"
+      "src/string.c"
+      "src/struct.c"
+      "src/symbol.c"
+      "src/vector.c"
+    ];
+  };
+}
diff --git a/foundation/src/stages/stage1/nyacc/default.nix b/foundation/src/stages/stage1/nyacc/default.nix
index df01438..82364a9 100644
--- a/foundation/src/stages/stage1/nyacc/default.nix
+++ b/foundation/src/stages/stage1/nyacc/default.nix
@@ -45,7 +45,7 @@ in {
     };
 
     src = lib.options.create {
-      type = lib.types.string;
+      type = lib.types.package;
       description = "Source for the package.";
     };
   };
@@ -60,6 +60,7 @@ in {
       package = builders.kaem.build {
         name = "${pname}-${version}";
         meta = cfg.meta;
+        src = cfg.src;
 
         script = ''
           ungz --file ${cfg.src} --output nyacc.tar
diff --git a/foundation/src/system/default.nix b/foundation/src/system/default.nix
index 388366d..d0946f1 100644
--- a/foundation/src/system/default.nix
+++ b/foundation/src/system/default.nix
@@ -2,6 +2,7 @@
   options.aux = {
     system = lib.options.create {
       type = lib.types.string;
+      default.value = "x86_64-linux";
       description = ''
         The system to build packages for. This value can be provided as either
         `config.aux.system` or by setting the `system` argument for modules.