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nixpkgs/pkgs/build-support/testers/hasPkgConfigModule/tester.nix

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Nix

# Static arguments
{ runCommand, pkg-config }:
# Tester arguments
{ package,
moduleName,
testName ? "check-pkg-config-${moduleName}",
}:
runCommand testName {
nativeBuildInputs = [ pkg-config ];
buildInputs = [ package ];
inherit moduleName;
meta = {
description = "Test whether ${package.name} exposes pkg-config module ${moduleName}";
}
# Make sure licensing info etc is preserved, as this is a concern for e.g. cache.nixos.org,
# as hydra can't check this meta info in dependencies.
# The test itself is just Nixpkgs, with MIT license.
// builtins.intersectAttrs
{
available = throw "unused";
broken = throw "unused";
insecure = throw "unused";
license = throw "unused";
maintainers = throw "unused";
platforms = throw "unused";
unfree = throw "unused";
unsupported = throw "unused";
}
package.meta;
} ''
echo "checking pkg-config module $moduleName in $buildInputs"
set +e
version="$(pkg-config --modversion $moduleName)"
r=$?
set -e
if [[ $r = 0 ]]; then
echo " pkg-config module $moduleName exists and has version $version"
echo "$version" > $out
else
echo "These modules were available in the input propagation closure:"
pkg-config --list-all
echo " pkg-config module $moduleName was not found"
false
fi
''