From 1642b2173bc3f061e578f4620cfb75e35394b154 Mon Sep 17 00:00:00 2001
From: Jake Hamilton <jake.hamilton@hey.com>
Date: Wed, 5 Jun 2024 04:10:35 -0700
Subject: [PATCH] refactor: code cleanup, move sources to separate module

---
 foundation/flake.lock                         |   2 +-
 foundation/flake.nix                          |   2 -
 .../stages/stage0/architecture/default.nix    |  35 +++++
 foundation/src/stages/stage0/default.nix      |   3 +
 foundation/src/stages/stage0/kaem/default.nix |  15 +--
 .../stage0/mescc-tools-extra/default.nix      |   6 +-
 .../src/stages/stage0/mescc-tools/default.nix |  46 ++++---
 .../src/stages/stage0/phases/phase00.nix      | 122 +-----------------
 .../src/stages/stage0/phases/phase01.nix      |   4 +-
 .../src/stages/stage0/phases/phase02.nix      |   4 +-
 .../src/stages/stage0/phases/phase03.nix      |  10 +-
 .../src/stages/stage0/phases/phase04.nix      |   6 +-
 .../src/stages/stage0/phases/phase05.nix      |   6 +-
 .../src/stages/stage0/phases/phase06.nix      |  28 ++--
 .../src/stages/stage0/phases/phase07.nix      |  18 +--
 .../src/stages/stage0/phases/phase08.nix      |  18 +--
 .../src/stages/stage0/phases/phase09.nix      |  40 +++---
 .../src/stages/stage0/phases/phase10.nix      |  40 +++---
 .../src/stages/stage0/phases/phase11.nix      |  42 +++---
 .../src/stages/stage0/phases/phase12.nix      |  44 ++++---
 .../src/stages/stage0/sources/default.nix     |  95 ++++++++++++++
 lib/src/packages/default.nix                  |   3 +-
 lib/src/paths/default.nix                     |   2 +-
 23 files changed, 314 insertions(+), 277 deletions(-)
 create mode 100644 foundation/src/stages/stage0/architecture/default.nix
 create mode 100644 foundation/src/stages/stage0/sources/default.nix

diff --git a/foundation/flake.lock b/foundation/flake.lock
index ae29a0d..6272b7f 100644
--- a/foundation/flake.lock
+++ b/foundation/flake.lock
@@ -3,7 +3,7 @@
     "lib": {
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-303zkU+ntdAF6JLE9gA3k5piX5RvKtQp6JXovZWzDdQ=",
+        "narHash": "sha256-wgO96O9ALMMXtfBKuh9rYo3KIVq4nk8V7Cke4dg0MOk=",
         "path": "../lib",
         "type": "path"
       },
diff --git a/foundation/flake.nix b/foundation/flake.nix
index f17fe5d..e8c5694 100644
--- a/foundation/flake.nix
+++ b/foundation/flake.nix
@@ -19,8 +19,6 @@
       # "aarch64-darwin"
     ];
   in {
-    modules.aux = modules;
-
     packages = forEachSystem (
       system: let
         result = lib.modules.run {
diff --git a/foundation/src/stages/stage0/architecture/default.nix b/foundation/src/stages/stage0/architecture/default.nix
new file mode 100644
index 0000000..ecb975c
--- /dev/null
+++ b/foundation/src/stages/stage0/architecture/default.nix
@@ -0,0 +1,35 @@
+{
+  lib,
+  config,
+}: let
+  system = config.aux.system;
+
+  architecture =
+    if system == "x86_64-linux"
+    then "AMD64"
+    else if system == "aarch64-linux"
+    then "AArch64"
+    else if system == "i686-linux"
+    then "x86"
+    else builtins.throw "Unsupported system for stage0: ${system}";
+in {
+  options.aux.foundation.stages.stage0.architecture = {
+    base = lib.options.create {
+      type = lib.types.string;
+      description = "The architecture to use for the source.";
+      default = {
+        value = architecture;
+        text = ''"AMD64" or "AArch64" or "x86"'';
+      };
+    };
+
+    m2libc = lib.options.create {
+      type = lib.types.string;
+      description = "The architecture to use for the M2libc source.";
+      default = {
+        value = lib.strings.lower architecture;
+        text = ''"amd64" or "aarch64" or "x86"'';
+      };
+    };
+  };
+}
diff --git a/foundation/src/stages/stage0/default.nix b/foundation/src/stages/stage0/default.nix
index 0ded291..aff235a 100644
--- a/foundation/src/stages/stage0/default.nix
+++ b/foundation/src/stages/stage0/default.nix
@@ -17,6 +17,9 @@
     else builtins.throw "Unsupported system for stage0: ${system}";
 in {
   includes = [
+    ./sources
+    ./architecture
+
     ./phases/phase00.nix
     ./phases/phase01.nix
     ./phases/phase02.nix
diff --git a/foundation/src/stages/stage0/kaem/default.nix b/foundation/src/stages/stage0/kaem/default.nix
index 4947847..961a4ad 100644
--- a/foundation/src/stages/stage0/kaem/default.nix
+++ b/foundation/src/stages/stage0/kaem/default.nix
@@ -3,20 +3,13 @@
   config,
 }: let
   cfg = config.aux.foundation.stages.stage0.kaem;
-  hex0 = config.aux.foundation.stages.stage0.hex0;
-  catm = config.aux.foundation.stages.stage0.catm;
-  M0 = config.aux.foundation.stages.stage0.M0;
-  cc_arch = config.aux.foundation.stages.stage0.cc_arch;
-  M2 = config.aux.foundation.stages.stage0.M2;
-  blood-elf = config.aux.foundation.stages.stage0.blood-elf;
-  M1 = config.aux.foundation.stages.stage0.M1;
-  hex2 = config.aux.foundation.stages.stage0.hex2;
-  kaem-unwrapped = config.aux.foundation.stages.stage0.kaem-unwrapped;
-  mescc-tools = config.aux.foundation.stages.stage0.mescc-tools;
-  mescc-tools-extra = config.aux.foundation.stages.stage0.mescc-tools-extra;
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+
+  kaem-unwrapped = config.aux.foundation.stages.stage0.kaem-unwrapped;
+  mescc-tools = config.aux.foundation.stages.stage0.mescc-tools;
+  mescc-tools-extra = config.aux.foundation.stages.stage0.mescc-tools-extra;
 in {
   options.aux.foundation.stages.stage0.kaem = {
     package = lib.options.create {
diff --git a/foundation/src/stages/stage0/mescc-tools-extra/default.nix b/foundation/src/stages/stage0/mescc-tools-extra/default.nix
index 337524c..d98eee0 100644
--- a/foundation/src/stages/stage0/mescc-tools-extra/default.nix
+++ b/foundation/src/stages/stage0/mescc-tools-extra/default.nix
@@ -16,6 +16,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.mescc-tools-extra = {
     package = lib.options.create {
@@ -68,10 +70,10 @@ in {
           ./build.kaem
         ];
 
-        src = hex0.mescc-tools-extra.src;
+        src = sources.mescc-tools-extra;
 
         m2libcOS = "linux";
-        m2libcArch = hex0.m2libc.architecture;
+        m2libcArch = architecture.m2libc;
         mesccTools = mescc-tools.package;
       });
     };
diff --git a/foundation/src/stages/stage0/mescc-tools/default.nix b/foundation/src/stages/stage0/mescc-tools/default.nix
index ba7e56e..f3d11ca 100644
--- a/foundation/src/stages/stage0/mescc-tools/default.nix
+++ b/foundation/src/stages/stage0/mescc-tools/default.nix
@@ -15,6 +15,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 
   bloodFlag =
     if config.aux.platform.bits == 64
@@ -35,13 +37,13 @@
 
   getExtraUtil = name: let
     script = builtins.toFile "build-${name}.kaem" ''
-        ''${M2} --architecture ${hex0.m2libc.architecture} \
+        ''${M2} --architecture ${architecture.m2libc} \
         -f ''${m2libc}/sys/types.h \
         -f ''${m2libc}/stddef.h \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/linux/fcntl.c \
+        -f ''${m2libc}/${architecture.m2libc}/linux/fcntl.c \
         -f ''${m2libc}/fcntl.c \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/linux/unistd.c \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/linux/sys/stat.c \
+        -f ''${m2libc}/${architecture.m2libc}/linux/unistd.c \
+        -f ''${m2libc}/${architecture.m2libc}/linux/sys/stat.c \
         -f ''${m2libc}/stdlib.c \
         -f ''${m2libc}/stdio.h \
         -f ''${m2libc}/stdio.c \
@@ -53,17 +55,17 @@
 
       ''${blood-elf-0} ${endianFlag} ${bloodFlag} -f ${name}.M1 -o ${name}-footer.M1
 
-      ''${M1} --architecture ${hex0.m2libc.architecture} \
+      ''${M1} --architecture ${architecture.m2libc} \
         ${endianFlag} \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1 \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/libc-full.M1 \
+        -f ''${m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1 \
+        -f ''${m2libc}/${architecture.m2libc}/libc-full.M1 \
         -f ${name}.M1 \
         -f ${name}-footer.M1 \
         -o ${name}.hex2
 
-      ''${hex2} --architecture ${hex0.m2libc.architecture} \
+      ''${hex2} --architecture ${architecture.m2libc} \
         ${endianFlag} \
-        -f ''${m2libc}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2 \
+        -f ''${m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2 \
         -f ${name}.hex2 \
         --base-address ${baseAddress} \
         -o ''${out}
@@ -85,16 +87,18 @@
         script
       ];
 
-      src = hex0.src;
+      src = sources.base;
+
       M1 = M1.package;
       M2 = M2.package;
       blood-elf-0 = blood-elf.package;
       hex2 = hex2.package;
-      m2libc = hex0.m2libc.src;
-      m2planet = hex0.m2planet.src;
-      m2mesoplanet = hex0.m2mesoplanet.src;
-      mesccTools = hex0.mescc-tools.src;
-      mesccToolsExtra = hex0.mescc-tools-extra.src;
+
+      m2libc = sources.m2libc;
+      m2planet = sources.m2planet;
+      m2mesoplanet = sources.m2mesoplanet;
+      mesccTools = sources.mescc-tools;
+      mesccToolsExtra = sources.mescc-tools-extra;
 
       bloodFlag = bloodFlag;
       endianFlag = endianFlag;
@@ -157,12 +161,12 @@ in {
         blood-elf-0 = blood-elf.package;
         hex2 = hex2.package;
 
-        m2libc = hex0.m2libc.src;
-        m2libcArch = hex0.m2libc.architecture;
-        m2planet = hex0.m2planet.src;
-        m2mesoplanet = hex0.m2mesoplanet.src;
-        mesccTools = hex0.mescc-tools.src;
-        mesccToolsExtra = hex0.mescc-tools-extra.src;
+        m2libc = sources.m2libc;
+        m2libcArch = architecture.m2libc;
+        m2planet = sources.m2planet;
+        m2mesoplanet = sources.m2mesoplanet;
+        mesccTools = sources.mescc-tools;
+        mesccToolsExtra = sources.mescc-tools-extra;
 
         bloodFlag = bloodFlag;
         endianFlag = endianFlag;
diff --git a/foundation/src/stages/stage0/phases/phase00.nix b/foundation/src/stages/stage0/phases/phase00.nix
index a778220..c18e67f 100644
--- a/foundation/src/stages/stage0/phases/phase00.nix
+++ b/foundation/src/stages/stage0/phases/phase00.nix
@@ -6,6 +6,7 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
 
   architecture =
     if system == "x86_64-linux"
@@ -61,64 +62,6 @@ in {
       type = lib.types.package;
       description = "The derivation to use to build hex0.";
     };
-
-    src = lib.options.create {
-      type = lib.types.string;
-      description = "The source for the hex0 build files.";
-    };
-
-    m2libc = {
-      src = lib.options.create {
-        type = lib.types.string;
-        description = "The source for the M2libc build files.";
-      };
-
-      architecture = lib.options.create {
-        type = lib.types.string;
-        description = "The architecture to use for the M2libc source.";
-        default = {
-          value = lib.strings.lower architecture;
-          text = ''"amd64" or "aarch64" or "x86"'';
-        };
-      };
-    };
-
-    m2planet = {
-      src = lib.options.create {
-        type = lib.types.string;
-        description = "The source for the M2-Planet build files.";
-      };
-    };
-
-    m2mesoplanet = {
-      src = lib.options.create {
-        type = lib.types.string;
-        description = "The source for the M2-MesoPlanet build files.";
-      };
-    };
-
-    mescc-tools = {
-      src = lib.options.create {
-        type = lib.types.string;
-        description = "The source for the mescc-tools build files.";
-      };
-    };
-
-    mescc-tools-extra = {
-      src = lib.options.create {
-        type = lib.types.string;
-        description = "The source for the mescc-tools-extra build files.";
-      };
-    };
-
-    architecture = lib.options.create {
-      type = lib.types.string;
-      description = "The architecture to use for the source.";
-      default = {
-        value = architecture;
-        text = ''"AMD64" or "AArch64" or "x86"'';
-      };
-    };
   };
 
   config = {
@@ -132,7 +75,7 @@ in {
         executable = cfg.executable;
 
         args = [
-          "${cfg.src}/hex0_${architecture}.hex0"
+          "${sources.base}/hex0_${architecture}.hex0"
           (builtins.placeholder "out")
         ];
 
@@ -157,67 +100,6 @@ in {
         executable = true;
         hash = cfg.hash;
       });
-
-      # All sources are combined a central repository via submodules. Due to potential quirks surrounding
-      # fetching that, we are instead fetching each submodule directly. The central repository is located
-      # here: https://github.com/oriansj/stage0-posix
-      src =
-        if architecture == "AMD64"
-        then
-          builtins.fetchTarball {
-            url = "https://github.com/oriansj/stage0-posix-amd64/archive/93fbe4c08772d8df1412e2554668e24cf604088c.tar.gz";
-            sha256 = "10d1xnjzqplpfip3pm89bydd501x1bcgkg7lkkadyq5bqpad5flp";
-          }
-        else if architecture == "AArch64"
-        then
-          # FIXME: We may need to patch the aarch64 variant.
-          # https://github.com/oriansj/M2libc/pull/17
-          builtins.fetchTarball {
-            url = "https://github.com/oriansj/stage0-posix-aarch64/archive/39a43f803d572b53f95d42507202152eeda18361.tar.gz";
-            sha256 = "1x607hr3n5j89394d156r23igpx8hifjd14ygksx7902rlwrrry2";
-          }
-        else if architecture == "x86"
-        then
-          builtins.fetchTarball {
-            url = "https://github.com/oriansj/stage0-posix-x86/archive/e86bf7d304bae5ce5ccc88454bb60cf0837e941f.tar.gz";
-            sha256 = "1c1fk793yzq8zbg60n2zd22fsmirc3zr26fj0iskap456g84nxv8";
-          }
-        else builtins.throw "Unsupported architecture for stage0: ${architecture}";
-
-      m2libc = {
-        src = builtins.fetchTarball {
-          url = "https://github.com/oriansj/M2libc/archive/de7c75f144176c3b9be77695d9bf94440445aeae.tar.gz";
-          sha256 = "01k81zn8yx4jg6fbcjgkrf9rp074yikkmwqykdgi9143yfb2k3yv";
-        };
-      };
-
-      m2planet = {
-        src = builtins.fetchTarball {
-          url = "https://github.com/oriansj/M2-Planet/archive/51dc63b349ca13fa57b345964254cf26930c0a7d.tar.gz";
-          sha256 = "1kksk260dh6qd0dzgl9vgs67fs0lsxs9w0gniy0ii5fgmqxi8p65";
-        };
-      };
-
-      m2mesoplanet = {
-        src = builtins.fetchTarball {
-          url = "https://github.com/oriansj/M2-Mesoplanet/archive/c80645f06b035debaa08e95da3206346a9f61b97.tar.gz";
-          sha256 = "02vzqln38ylfnd88p87935yf26i60gkbv93ns5j7parqgyyz2kl4";
-        };
-      };
-
-      mescc-tools = {
-        src = builtins.fetchTarball {
-          url = "https://github.com/oriansj/mescc-tools/archive/5d37991e22d1e4147411a766f4410508ba872962.tar.gz";
-          sha256 = "1xgpqhc5diim3rr9a00939976svrbhfp4v5970548a137fdynl4c";
-        };
-      };
-
-      mescc-tools-extra = {
-        src = builtins.fetchTarball {
-          url = "https://github.com/oriansj/mescc-tools-extra/archive/c1bd4ab4c5b994d8167c1e6dfc14050dc151a911.tar.gz";
-          sha256 = "0v8vxn3a8rxbgi6vcw73jqkw9j5vg3qlvd4sxk2w0fpybjml8brd";
-        };
-      };
     };
   };
 }
diff --git a/foundation/src/stages/stage0/phases/phase01.nix b/foundation/src/stages/stage0/phases/phase01.nix
index 355989c..7053a44 100644
--- a/foundation/src/stages/stage0/phases/phase01.nix
+++ b/foundation/src/stages/stage0/phases/phase01.nix
@@ -7,6 +7,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.hex1 = {
     package = lib.options.create {
@@ -53,7 +55,7 @@ in {
         executable = hex0.package;
 
         args = [
-          "${hex0.src}/hex1_${hex0.architecture}.hex0"
+          "${sources.base}/hex1_${architecture.base}.hex0"
           (builtins.placeholder "out")
         ];
       });
diff --git a/foundation/src/stages/stage0/phases/phase02.nix b/foundation/src/stages/stage0/phases/phase02.nix
index ab2606c..8cb217a 100644
--- a/foundation/src/stages/stage0/phases/phase02.nix
+++ b/foundation/src/stages/stage0/phases/phase02.nix
@@ -8,6 +8,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.hex2-0 = {
     package = lib.options.create {
@@ -54,7 +56,7 @@ in {
         executable = hex1.package;
 
         args = [
-          "${hex0.src}/hex2_${hex0.architecture}.hex1"
+          "${sources.base}/hex2_${architecture.base}.hex1"
           (builtins.placeholder "out")
         ];
       });
diff --git a/foundation/src/stages/stage0/phases/phase03.nix b/foundation/src/stages/stage0/phases/phase03.nix
index 156e5cf..764c5ad 100644
--- a/foundation/src/stages/stage0/phases/phase03.nix
+++ b/foundation/src/stages/stage0/phases/phase03.nix
@@ -9,6 +9,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.catm = {
     package = lib.options.create {
@@ -53,18 +55,18 @@ in {
         meta = cfg.meta;
 
         executable =
-          if hex0.architecture == "AArch64"
+          if architecture.base == "AArch64"
           then hex1.package
           else hex2-0.package;
 
         args =
-          if hex0.architecture == "AArch64"
+          if architecture.base == "AArch64"
           then [
-            "${hex0.src}/catm_${hex0.architecture}.hex1"
+            "${sources.base}/catm_${architecture.base}.hex1"
             (builtins.placeholder "out")
           ]
           else [
-            "${hex0.src}/catm_${hex0.architecture}.hex2"
+            "${sources.base}/catm_${architecture.base}.hex2"
             (builtins.placeholder "out")
           ];
       });
diff --git a/foundation/src/stages/stage0/phases/phase04.nix b/foundation/src/stages/stage0/phases/phase04.nix
index 57808fa..d2a94da 100644
--- a/foundation/src/stages/stage0/phases/phase04.nix
+++ b/foundation/src/stages/stage0/phases/phase04.nix
@@ -9,6 +9,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.M0 = {
     package = lib.options.create {
@@ -65,8 +67,8 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}.hex2"
-              "${hex0.src}/M0_${hex0.architecture}.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}.hex2"
+              "${sources.base}/M0_${architecture.base}.hex2"
             ];
           };
         in [
diff --git a/foundation/src/stages/stage0/phases/phase05.nix b/foundation/src/stages/stage0/phases/phase05.nix
index 3c11dbe..a6c2bde 100644
--- a/foundation/src/stages/stage0/phases/phase05.nix
+++ b/foundation/src/stages/stage0/phases/phase05.nix
@@ -10,6 +10,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.cc_arch = {
     package = lib.options.create {
@@ -65,7 +67,7 @@ in {
             executable = M0.package;
 
             args = [
-              "${hex0.src}/cc_${hex0.m2libc.architecture}.M1"
+              "${sources.base}/cc_${architecture.m2libc}.M1"
               (builtins.placeholder "out")
             ];
           };
@@ -79,7 +81,7 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}.hex2"
               cc_arch0_hex2-0
             ];
           };
diff --git a/foundation/src/stages/stage0/phases/phase06.nix b/foundation/src/stages/stage0/phases/phase06.nix
index 728e3e7..943e540 100644
--- a/foundation/src/stages/stage0/phases/phase06.nix
+++ b/foundation/src/stages/stage0/phases/phase06.nix
@@ -11,6 +11,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.M2 = {
     package = lib.options.create {
@@ -67,16 +69,16 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/bootstrap.c"
-              "${hex0.m2planet.src}/cc.h"
-              "${hex0.m2libc.src}/bootstrappable.c"
-              "${hex0.m2planet.src}/cc_globals.c"
-              "${hex0.m2planet.src}/cc_reader.c"
-              "${hex0.m2planet.src}/cc_strings.c"
-              "${hex0.m2planet.src}/cc_types.c"
-              "${hex0.m2planet.src}/cc_core.c"
-              "${hex0.m2planet.src}/cc_macro.c"
-              "${hex0.m2planet.src}/cc.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/bootstrap.c"
+              "${sources.m2planet}/cc.h"
+              "${sources.m2libc}/bootstrappable.c"
+              "${sources.m2planet}/cc_globals.c"
+              "${sources.m2planet}/cc_reader.c"
+              "${sources.m2planet}/cc_strings.c"
+              "${sources.m2planet}/cc_types.c"
+              "${sources.m2planet}/cc_core.c"
+              "${sources.m2planet}/cc_macro.c"
+              "${sources.m2planet}/cc.c"
             ];
           };
           M2_M1 = builders.raw.build {
@@ -102,8 +104,8 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-core.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-core.M1"
               M2_M1
             ];
           };
@@ -130,7 +132,7 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}.hex2"
               M2_hex2-0
             ];
           };
diff --git a/foundation/src/stages/stage0/phases/phase07.nix b/foundation/src/stages/stage0/phases/phase07.nix
index ee4e8b0..43a577e 100644
--- a/foundation/src/stages/stage0/phases/phase07.nix
+++ b/foundation/src/stages/stage0/phases/phase07.nix
@@ -12,6 +12,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.blood-elf = {
     package = lib.options.create {
@@ -68,15 +70,15 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/bootstrap.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/bootstrap.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/stringify.c"
+              "${sources.mescc-tools}/stringify.c"
               "-f"
-              "${hex0.mescc-tools.src}/blood-elf.c"
+              "${sources.mescc-tools}/blood-elf.c"
               "--bootstrap-mode"
               "-o"
               (builtins.placeholder "out")
@@ -92,8 +94,8 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-core.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-core.M1"
               blood-elf_M1
             ];
           };
@@ -120,7 +122,7 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}.hex2"
               blood-elf_hex2-0
             ];
           };
diff --git a/foundation/src/stages/stage0/phases/phase08.nix b/foundation/src/stages/stage0/phases/phase08.nix
index c678c85..f83746b 100644
--- a/foundation/src/stages/stage0/phases/phase08.nix
+++ b/foundation/src/stages/stage0/phases/phase08.nix
@@ -13,6 +13,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.M1-0 = {
     package = lib.options.create {
@@ -69,15 +71,15 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/bootstrap.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/bootstrap.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/stringify.c"
+              "${sources.mescc-tools}/stringify.c"
               "-f"
-              "${hex0.mescc-tools.src}/M1-macro.c"
+              "${sources.mescc-tools}/M1-macro.c"
               "--bootstrap-mode"
               "--debug"
               "-o"
@@ -116,8 +118,8 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-core.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-core.M1"
               M1-macro-0_M1
               M1-macro-0-footer_M1
             ];
@@ -145,7 +147,7 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2"
               M1-macro-0_hex2-0
             ];
           };
diff --git a/foundation/src/stages/stage0/phases/phase09.nix b/foundation/src/stages/stage0/phases/phase09.nix
index 08dc589..6011a4e 100644
--- a/foundation/src/stages/stage0/phases/phase09.nix
+++ b/foundation/src/stages/stage0/phases/phase09.nix
@@ -14,6 +14,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.hex2-1 = {
     package = lib.options.create {
@@ -70,35 +72,35 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/sys/types.h"
+              "${sources.m2libc}/sys/types.h"
               "-f"
-              "${hex0.m2libc.src}/stddef.h"
+              "${sources.m2libc}/stddef.h"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/unistd.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/unistd.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/fcntl.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/fcntl.c"
+              "${sources.m2libc}/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/sys/stat.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/sys/stat.c"
               "-f"
-              "${hex0.m2libc.src}/stdlib.c"
+              "${sources.m2libc}/stdlib.c"
               "-f"
-              "${hex0.m2libc.src}/stdio.h"
+              "${sources.m2libc}/stdio.h"
               "-f"
-              "${hex0.m2libc.src}/stdio.c"
+              "${sources.m2libc}/stdio.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2.h"
+              "${sources.mescc-tools}/hex2.h"
               "-f"
-              "${hex0.mescc-tools.src}/hex2_linker.c"
+              "${sources.mescc-tools}/hex2_linker.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2_word.c"
+              "${sources.mescc-tools}/hex2_word.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2.c"
+              "${sources.mescc-tools}/hex2.c"
               "--debug"
               "-o"
               (builtins.placeholder "out")
@@ -136,16 +138,16 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               (
                 if config.aux.platform.endian == "little"
                 then "--little-endian"
                 else "--big-endian"
               )
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-full.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-full.M1"
               "-f"
               hex2_linker_M1
               "-f"
@@ -164,7 +166,7 @@ in {
 
             args = [
               (builtins.placeholder "out")
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2"
+              "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2"
               hex2_linker_hex2
             ];
           };
diff --git a/foundation/src/stages/stage0/phases/phase10.nix b/foundation/src/stages/stage0/phases/phase10.nix
index b941865..b611260 100644
--- a/foundation/src/stages/stage0/phases/phase10.nix
+++ b/foundation/src/stages/stage0/phases/phase10.nix
@@ -15,6 +15,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.M1 = {
     package = lib.options.create {
@@ -71,33 +73,33 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/sys/types.h"
+              "${sources.m2libc}/sys/types.h"
               "-f"
-              "${hex0.m2libc.src}/stddef.h"
+              "${sources.m2libc}/stddef.h"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/unistd.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/unistd.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/fcntl.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/fcntl.c"
+              "${sources.m2libc}/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/sys/stat.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/sys/stat.c"
               "-f"
-              "${hex0.m2libc.src}/string.c"
+              "${sources.m2libc}/string.c"
               "-f"
-              "${hex0.m2libc.src}/stdlib.c"
+              "${sources.m2libc}/stdlib.c"
               "-f"
-              "${hex0.m2libc.src}/stdio.h"
+              "${sources.m2libc}/stdio.h"
               "-f"
-              "${hex0.m2libc.src}/stdio.c"
+              "${sources.m2libc}/stdio.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/stringify.c"
+              "${sources.mescc-tools}/stringify.c"
               "-f"
-              "${hex0.mescc-tools.src}/M1-macro.c"
+              "${sources.mescc-tools}/M1-macro.c"
               "--debug"
               "-o"
               (builtins.placeholder "out")
@@ -135,16 +137,16 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               (
                 if config.aux.platform.endian == "little"
                 then "--little-endian"
                 else "--big-endian"
               )
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-full.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-full.M1"
               "-f"
               M1-macro_M1
               "-f"
@@ -155,7 +157,7 @@ in {
           };
         in [
           "--architecture"
-          hex0.m2libc.architecture
+          architecture.m2libc
           (
             if config.aux.platform.endian == "little"
             then "--little-endian"
@@ -172,7 +174,7 @@ in {
             else builtins.throw "Unsupported system: ${config.aux.system}"
           )
           "-f"
-          "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2"
+          "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2"
           "-f"
           M1-macro_hex2
           "-o"
diff --git a/foundation/src/stages/stage0/phases/phase11.nix b/foundation/src/stages/stage0/phases/phase11.nix
index 68775f5..2f2920d 100644
--- a/foundation/src/stages/stage0/phases/phase11.nix
+++ b/foundation/src/stages/stage0/phases/phase11.nix
@@ -14,6 +14,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.hex2 = {
     package = lib.options.create {
@@ -70,35 +72,35 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/sys/types.h"
+              "${sources.m2libc}/sys/types.h"
               "-f"
-              "${hex0.m2libc.src}/stddef.h"
+              "${sources.m2libc}/stddef.h"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/unistd.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/unistd.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/fcntl.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/fcntl.c"
+              "${sources.m2libc}/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/sys/stat.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/sys/stat.c"
               "-f"
-              "${hex0.m2libc.src}/stdlib.c"
+              "${sources.m2libc}/stdlib.c"
               "-f"
-              "${hex0.m2libc.src}/stdio.h"
+              "${sources.m2libc}/stdio.h"
               "-f"
-              "${hex0.m2libc.src}/stdio.c"
+              "${sources.m2libc}/stdio.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2.h"
+              "${sources.mescc-tools}/hex2.h"
               "-f"
-              "${hex0.mescc-tools.src}/hex2_linker.c"
+              "${sources.mescc-tools}/hex2_linker.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2_word.c"
+              "${sources.mescc-tools}/hex2_word.c"
               "-f"
-              "${hex0.mescc-tools.src}/hex2.c"
+              "${sources.mescc-tools}/hex2.c"
               "--debug"
               "-o"
               (builtins.placeholder "out")
@@ -135,16 +137,16 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               (
                 if config.aux.platform.endian == "little"
                 then "--little-endian"
                 else "--big-endian"
               )
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-full.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-full.M1"
               "-f"
               hex2_linker_M1
               "-f"
@@ -155,7 +157,7 @@ in {
           };
         in [
           "--architecture"
-          hex0.m2libc.architecture
+          architecture.m2libc
           (
             if config.aux.platform.endian == "little"
             then "--little-endian"
@@ -172,7 +174,7 @@ in {
             else builtins.throw "Unsupported system: ${config.aux.system}"
           )
           "-f"
-          "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2"
+          "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2"
           "-f"
           hex2_linker_hex2
           "-o"
diff --git a/foundation/src/stages/stage0/phases/phase12.nix b/foundation/src/stages/stage0/phases/phase12.nix
index b9d1d5a..57dff75 100644
--- a/foundation/src/stages/stage0/phases/phase12.nix
+++ b/foundation/src/stages/stage0/phases/phase12.nix
@@ -14,6 +14,8 @@
 
   system = config.aux.system;
   builders = config.aux.foundation.builders;
+  sources = config.aux.foundation.stages.stage0.sources;
+  architecture = config.aux.foundation.stages.stage0.architecture;
 in {
   options.aux.foundation.stages.stage0.kaem-unwrapped = {
     package = lib.options.create {
@@ -70,37 +72,37 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               "-f"
-              "${hex0.m2libc.src}/sys/types.h"
+              "${sources.m2libc}/sys/types.h"
               "-f"
-              "${hex0.m2libc.src}/stddef.h"
+              "${sources.m2libc}/stddef.h"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/unistd.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/unistd.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/fcntl.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/fcntl.c"
+              "${sources.m2libc}/fcntl.c"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/linux/sys/stat.c"
+              "${sources.m2libc}/${architecture.m2libc}/linux/sys/stat.c"
               "-f"
-              "${hex0.m2libc.src}/string.c"
+              "${sources.m2libc}/string.c"
               "-f"
-              "${hex0.m2libc.src}/stdlib.c"
+              "${sources.m2libc}/stdlib.c"
               "-f"
-              "${hex0.m2libc.src}/stdio.h"
+              "${sources.m2libc}/stdio.h"
               "-f"
-              "${hex0.m2libc.src}/stdio.c"
+              "${sources.m2libc}/stdio.c"
               "-f"
-              "${hex0.m2libc.src}/bootstrappable.c"
+              "${sources.m2libc}/bootstrappable.c"
               "-f"
-              "${hex0.mescc-tools.src}/Kaem/kaem.h"
+              "${sources.mescc-tools}/Kaem/kaem.h"
               "-f"
-              "${hex0.mescc-tools.src}/Kaem/variable.c"
+              "${sources.mescc-tools}/Kaem/variable.c"
               "-f"
-              "${hex0.mescc-tools.src}/Kaem/kaem_globals.c"
+              "${sources.mescc-tools}/Kaem/kaem_globals.c"
               "-f"
-              "${hex0.mescc-tools.src}/Kaem/kaem.c"
+              "${sources.mescc-tools}/Kaem/kaem.c"
               "--debug"
               "-o"
               (builtins.placeholder "out")
@@ -137,16 +139,16 @@ in {
 
             args = [
               "--architecture"
-              hex0.m2libc.architecture
+              architecture.m2libc
               (
                 if config.aux.platform.endian == "little"
                 then "--little-endian"
                 else "--big-endian"
               )
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/${hex0.m2libc.architecture}_defs.M1"
+              "${sources.m2libc}/${architecture.m2libc}/${architecture.m2libc}_defs.M1"
               "-f"
-              "${hex0.m2libc.src}/${hex0.m2libc.architecture}/libc-full.M1"
+              "${sources.m2libc}/${architecture.m2libc}/libc-full.M1"
               "-f"
               kaem_M1
               "-f"
@@ -157,7 +159,7 @@ in {
           };
         in [
           "--architecture"
-          hex0.m2libc.architecture
+          architecture.m2libc
           (
             if config.aux.platform.endian == "little"
             then "--little-endian"
@@ -174,7 +176,7 @@ in {
             else builtins.throw "Unsupported system: ${config.aux.system}"
           )
           "-f"
-          "${hex0.m2libc.src}/${hex0.m2libc.architecture}/ELF-${hex0.m2libc.architecture}-debug.hex2"
+          "${sources.m2libc}/${architecture.m2libc}/ELF-${architecture.m2libc}-debug.hex2"
           "-f"
           kaem_hex2
           "-o"
diff --git a/foundation/src/stages/stage0/sources/default.nix b/foundation/src/stages/stage0/sources/default.nix
new file mode 100644
index 0000000..af9d52b
--- /dev/null
+++ b/foundation/src/stages/stage0/sources/default.nix
@@ -0,0 +1,95 @@
+{
+  lib,
+  config,
+}: let
+  system = config.aux.system;
+
+  architecture = config.aux.foundation.stages.stage0.architecture.base;
+in {
+  options.aux.foundation.stages.stage0.sources = {
+    base = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the hex0 build files.";
+    };
+
+    m2libc = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the M2libc build files.";
+    };
+
+    m2planet = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the M2-Planet build files.";
+    };
+
+    m2mesoplanet = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the M2-Mesoplanet build files.";
+    };
+
+    mescc-tools = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the mescc-tools build files.";
+    };
+
+    mescc-tools-extra = lib.options.create {
+      type = lib.types.string;
+      description = "The source for the mescc-tools-extra build files.";
+    };
+  };
+
+  config = {
+    aux.foundation.stages.stage0.sources = {
+      # All sources are combined a central repository via submodules. Due to potential quirks surrounding
+      # fetching that, we are instead fetching each submodule directly. The central repository is located
+      # here: https://github.com/oriansj/stage0-posix
+      base =
+        if architecture == "AMD64"
+        then
+          builtins.fetchTarball {
+            url = "https://github.com/oriansj/stage0-posix-amd64/archive/93fbe4c08772d8df1412e2554668e24cf604088c.tar.gz";
+            sha256 = "10d1xnjzqplpfip3pm89bydd501x1bcgkg7lkkadyq5bqpad5flp";
+          }
+        else if architecture == "AArch64"
+        then
+          # FIXME: We may need to patch the aarch64 variant.
+          # https://github.com/oriansj/M2libc/pull/17
+          builtins.fetchTarball {
+            url = "https://github.com/oriansj/stage0-posix-aarch64/archive/39a43f803d572b53f95d42507202152eeda18361.tar.gz";
+            sha256 = "1x607hr3n5j89394d156r23igpx8hifjd14ygksx7902rlwrrry2";
+          }
+        else if architecture == "x86"
+        then
+          builtins.fetchTarball {
+            url = "https://github.com/oriansj/stage0-posix-x86/archive/e86bf7d304bae5ce5ccc88454bb60cf0837e941f.tar.gz";
+            sha256 = "1c1fk793yzq8zbg60n2zd22fsmirc3zr26fj0iskap456g84nxv8";
+          }
+        else builtins.throw "Unsupported architecture for stage0: ${architecture}";
+
+      m2libc = builtins.fetchTarball {
+        url = "https://github.com/oriansj/M2libc/archive/de7c75f144176c3b9be77695d9bf94440445aeae.tar.gz";
+        sha256 = "01k81zn8yx4jg6fbcjgkrf9rp074yikkmwqykdgi9143yfb2k3yv";
+      };
+
+      m2planet = builtins.fetchTarball {
+        url = "https://github.com/oriansj/M2-Planet/archive/51dc63b349ca13fa57b345964254cf26930c0a7d.tar.gz";
+        sha256 = "1kksk260dh6qd0dzgl9vgs67fs0lsxs9w0gniy0ii5fgmqxi8p65";
+      };
+
+      m2mesoplanet = builtins.fetchTarball {
+        url = "https://github.com/oriansj/M2-Mesoplanet/archive/c80645f06b035debaa08e95da3206346a9f61b97.tar.gz";
+        sha256 = "02vzqln38ylfnd88p87935yf26i60gkbv93ns5j7parqgyyz2kl4";
+      };
+
+      mescc-tools = builtins.fetchTarball {
+        url = "https://github.com/oriansj/mescc-tools/archive/5d37991e22d1e4147411a766f4410508ba872962.tar.gz";
+        sha256 = "1xgpqhc5diim3rr9a00939976svrbhfp4v5970548a137fdynl4c";
+      };
+
+      mescc-tools-extra = builtins.fetchTarball {
+        url = "https://github.com/oriansj/mescc-tools-extra/archive/c1bd4ab4c5b994d8167c1e6dfc14050dc151a911.tar.gz";
+        sha256 = "0v8vxn3a8rxbgi6vcw73jqkw9j5vg3qlvd4sxk2w0fpybjml8brd";
+      };
+    };
+  };
+}
diff --git a/lib/src/packages/default.nix b/lib/src/packages/default.nix
index 0373db2..b944244 100644
--- a/lib/src/packages/default.nix
+++ b/lib/src/packages/default.nix
@@ -5,7 +5,8 @@ lib: {
     ## `lib.paths.into.drv` for convenience.
     ##
     ## @type a -> Bool
-    isDerivation = value: value.type or null == "derivation";
+    isDerivation = value:
+      value.type or null == "derivation";
 
     ## Sanitize a string to produce a valid name for a derivation.
     ##
diff --git a/lib/src/paths/default.nix b/lib/src/paths/default.nix
index 8378c0b..c8ff14c 100644
--- a/lib/src/paths/default.nix
+++ b/lib/src/paths/default.nix
@@ -25,7 +25,7 @@ lib: {
       ##
       ## @type Path -> Bool
       store = value:
-        if lib.strings.stringifiable value
+        if lib.strings.validate.stringifiable value
         then
           builtins.substring 0 1 (builtins.toString value)
           == "/"