forked from lix-project/lix
56605b4688
Resolve the derivation before trying to load its environment − essentially reproducing what the build loop does − so that we can effectively access our dependencies (and not just their placeholders). Fix #4821
71 lines
1.5 KiB
Nix
71 lines
1.5 KiB
Nix
{ inNixShell ? false, contentAddressed ? false }:
|
|
|
|
let cfg = import ./config.nix; in
|
|
with cfg;
|
|
|
|
let
|
|
mkDerivation =
|
|
if contentAddressed then
|
|
args: cfg.mkDerivation ({
|
|
__contentAddressed = true;
|
|
outputHashMode = "recursive";
|
|
outputHashAlgo = "sha256";
|
|
} // args)
|
|
else cfg.mkDerivation;
|
|
in
|
|
|
|
let pkgs = rec {
|
|
setupSh = builtins.toFile "setup" ''
|
|
export VAR_FROM_STDENV_SETUP=foo
|
|
for pkg in $buildInputs; do
|
|
export PATH=$PATH:$pkg/bin
|
|
done
|
|
'';
|
|
|
|
stdenv = mkDerivation {
|
|
name = "stdenv";
|
|
buildCommand = ''
|
|
mkdir -p $out
|
|
ln -s ${setupSh} $out/setup
|
|
'';
|
|
};
|
|
|
|
shellDrv = mkDerivation {
|
|
name = "shellDrv";
|
|
builder = "/does/not/exist";
|
|
VAR_FROM_NIX = "bar";
|
|
TEST_inNixShell = if inNixShell then "true" else "false";
|
|
inherit stdenv;
|
|
outputs = ["dev" "out"];
|
|
};
|
|
|
|
# Used by nix-shell -p
|
|
runCommand = name: args: buildCommand: mkDerivation (args // {
|
|
inherit name buildCommand stdenv;
|
|
});
|
|
|
|
foo = runCommand "foo" {} ''
|
|
mkdir -p $out/bin
|
|
echo 'echo foo' > $out/bin/foo
|
|
chmod a+rx $out/bin/foo
|
|
ln -s ${shell} $out/bin/bash
|
|
'';
|
|
|
|
bar = runCommand "bar" {} ''
|
|
mkdir -p $out/bin
|
|
echo 'echo bar' > $out/bin/bar
|
|
chmod a+rx $out/bin/bar
|
|
'';
|
|
|
|
bash = shell;
|
|
|
|
# ruby "interpreter" that outputs "$@"
|
|
ruby = runCommand "ruby" {} ''
|
|
mkdir -p $out/bin
|
|
echo 'printf %s "$*"' > $out/bin/ruby
|
|
chmod a+rx $out/bin/ruby
|
|
'';
|
|
|
|
inherit pkgs;
|
|
}; in pkgs
|