lix/tests/dyn-drv/recursive-mod-json.nix
John Ericson e26662709e Add a more interesting test
In this one, we don't just output an existing derivation as is, but
modify it first.
2023-04-19 20:36:33 -04:00

34 lines
849 B
Nix

with import ./config.nix;
let innerName = "foo"; in
mkDerivation rec {
name = "${innerName}.drv";
SHELL = shell;
requiredSystemFeatures = [ "recursive-nix" ];
drv = builtins.unsafeDiscardOutputDependency (import ./text-hashed-output.nix).root.drvPath;
buildCommand = ''
export NIX_CONFIG='experimental-features = nix-command ca-derivations'
PATH=${builtins.getEnv "EXTRA_PATH"}:$PATH
# JSON of pre-existing drv
nix derivation show $drv | jq .[] > drv0.json
# Fix name
jq < drv0.json '.name = "${innerName}"' > drv1.json
# Extend `buildCommand`
jq < drv1.json '.env.buildCommand += "echo \"I am alive!\" >> $out/hello\n"' > drv0.json
# Used as our output
cp $(nix derivation add < drv0.json) $out
'';
__contentAddressed = true;
outputHashMode = "text";
outputHashAlgo = "sha256";
}