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Diffstat (limited to 'pkgs/stdenv/generic/make-derivation.nix')
| -rw-r--r-- | pkgs/stdenv/generic/make-derivation.nix | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/pkgs/stdenv/generic/make-derivation.nix b/pkgs/stdenv/generic/make-derivation.nix index 5b1c380548f..e0266aacf34 100644 --- a/pkgs/stdenv/generic/make-derivation.nix +++ b/pkgs/stdenv/generic/make-derivation.nix @@ -338,6 +338,32 @@ in rec { validity.handled ({ overrideAttrs = f: mkDerivation (attrs // (f attrs)); + + # A derivation that always builds successfully and whose runtime + # dependencies are the original derivations build time dependencies + # This allows easy building and distributing of all derivations + # needed to enter a nix-shell with + # nix-build shell.nix -A inputDerivation + inputDerivation = derivation (derivationArg // { + # Add a name in case the original drv didn't have one + name = derivationArg.name or "inputDerivation"; + # This always only has one output + outputs = [ "out" ]; + + # Propagate the original builder and arguments, since we override + # them and they might contain references to build inputs + _derivation_original_builder = derivationArg.builder; + _derivation_original_args = derivationArg.args; + + builder = stdenv.shell; + # The bash builtin `export` dumps all current environment variables, + # which is where all build input references end up (e.g. $PATH for + # binaries). By writing this to $out, Nix can find and register + # them as runtime dependencies (since Nix greps for store paths + # through $out to find them) + args = [ "-c" "export > $out" ]; + }); + inherit meta passthru; } // # Pass through extra attributes that are not inputs, but |