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{ lib, stdenv, pkgs }:
# since the tests are using a early stdenv, the stdenv will have dontPatchShebangs=1, so it has to be unset
# https://github.com/NixOS/nixpkgs/blob/768a982bfc9d29a6bd3beb963ed4b054451ce3d0/pkgs/stdenv/linux/default.nix#L148-L153
# strictDeps has to be disabled because the shell isn't in buildInputs
let
tests = {
bad-shebang = stdenv.mkDerivation {
name = "bad-shebang";
strictDeps = false;
dontUnpack = true;
installPhase = ''
mkdir -p $out/bin
echo "#!/bin/bash" > $out/bin/test
echo "echo -n hello" >> $out/bin/test
chmod +x $out/bin/test
dontPatchShebangs=
'';
passthru = {
assertion = "grep '^#!${stdenv.shell}' $out/bin/test > /dev/null";
};
};
ignores-nix-store = stdenv.mkDerivation {
name = "ignores-nix-store";
strictDeps = false;
dontUnpack = true;
installPhase = ''
mkdir -p $out/bin
echo "#!$NIX_STORE/path/to/bash" > $out/bin/test
echo "echo -n hello" >> $out/bin/test
chmod +x $out/bin/test
dontPatchShebangs=
'';
passthru = {
assertion = "grep \"^#!$NIX_STORE/path/to/bash\" $out/bin/test > /dev/null";
};
};
updates-nix-store = stdenv.mkDerivation {
name = "updates-nix-store";
strictDeps = false;
dontUnpack = true;
installPhase = ''
mkdir -p $out/bin
echo "#!$NIX_STORE/path/to/bash" > $out/bin/test
echo "echo -n hello" >> $out/bin/test
chmod +x $out/bin/test
patchShebangs --update $out/bin/test
dontPatchShebangs=1
'';
passthru = {
assertion = "grep '^#!${stdenv.shell}' $out/bin/test > /dev/null";
};
};
split-string = stdenv.mkDerivation {
name = "split-string";
strictDeps = false;
dontUnpack = true;
installPhase = ''
mkdir -p $out/bin
echo "#!/usr/bin/env -S bash --posix" > $out/bin/test
echo "echo -n hello" >> $out/bin/test
chmod +x $out/bin/test
dontPatchShebangs=
'';
passthru = {
assertion = "grep -v '^#!${pkgs.coreutils}/bin/env -S ${stdenv.shell} --posix' $out/bin/test > /dev/null";
};
};
without-trailing-newline = stdenv.mkDerivation {
name = "without-trailing-newline";
strictDeps = false;
dontUnpack = true;
installPhase = ''
mkdir -p $out/bin
printf "#!/bin/bash" > $out/bin/test
chmod +x $out/bin/test
dontPatchShebangs=
'';
passthru = {
assertion = "grep '^#!${stdenv.shell}' $out/bin/test > /dev/null";
};
};
};
in
stdenv.mkDerivation {
name = "test-patch-shebangs";
passthru = { inherit (tests) bad-shebang ignores-nix-store updates-nix-store split-string without-trailing-newline; };
buildCommand = ''
validate() {
local name=$1
local testout=$2
local assertion=$3
echo -n "... $name: " >&2
local rc=0
(out=$testout eval "$assertion") || rc=1
if [ "$rc" -eq 0 ]; then
echo "yes" >&2
else
echo "no" >&2
fi
return "$rc"
}
echo "checking whether patchShebangs works properly... ">&2
fail=
${lib.concatStringsSep "\n" (lib.mapAttrsToList (_: test: ''
validate "${test.name}" "${test}" ${lib.escapeShellArg test.assertion} || fail=1
'') tests)}
if [ "$fail" ]; then
echo "failed"
exit 1
else
echo "succeeded"
touch $out
fi
'';
}
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