core/pkgs/build-support/deterministic-uname/default.nix

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2024-05-02 00:46:19 +00:00
# expr and script based on our lsb_release
{ stdenv
, lib
, substituteAll
, coreutils
, getopt
, modDirVersion ? ""
}:
substituteAll {
name = "uname";
src = ./deterministic-uname.sh;
dir = "bin";
isExecutable = true;
inherit coreutils getopt;
uSystem = if stdenv.buildPlatform.uname.system != null then stdenv.buildPlatform.uname.system else "unknown";
inherit (stdenv.buildPlatform.uname) processor;
# uname -o
# maybe add to lib/systems/default.nix uname attrset
# https://github.com/coreutils/coreutils/blob/7fc84d1c0f6b35231b0b4577b70aaa26bf548a7c/src/uname.c#L373-L374
# https://stackoverflow.com/questions/61711186/where-does-host-operating-system-in-uname-c-comes-from
# https://github.com/coreutils/gnulib/blob/master/m4/host-os.m4
operatingSystem =
if stdenv.buildPlatform.isLinux
then "GNU/Linux"
else if stdenv.buildPlatform.isDarwin
then "Darwin" # darwin isn't in host-os.m4 so where does this come from?
else "unknown";
# in os-specific/linux module packages
# --replace '$(shell uname -r)' "${kernel.modDirVersion}" \
# is a common thing to do.
modDirVersion = if modDirVersion != "" then modDirVersion else "unknown";
meta = with lib; {
description = "Print certain system information (hardcoded with lib/system values)";
mainProgram = "uname";
longDescription = ''
This package provides a replacement for `uname` whose output depends only
on `stdenv.buildPlatform`. It is meant to be used from within derivations.
Many packages' build processes run `uname` at compile time and embed its
output into the result of the build. Since `uname` calls into the kernel,
and the Nix sandbox currently does not intercept these calls, builds made
on different kernels will produce different results.
'';
license = [ licenses.mit ];
maintainers = with maintainers; [ artturin ];
platforms = platforms.all;
};
}