741377b300
makeOverridable is very careful to ensure the arguments to the
overridden function are the same as the input function. As a result,
the arguments of hello.override are exactly the same as the original
arguments of the hello function that produced the derivation.
However, callPackagesWith calls makeOverridable with a lambda that
does not propagate the arguments. The override function for a package
instantiated with callPackagesWith will not have the original
arguments.
For example:
nix-repl> lib.functionArgs hello.override
{ callPackage = false; fetchurl = false; hello = false; lib = false; nixos = false; stdenv = false; testers = false; }
nix-repl> lib.functionArgs openssl.override
{ }
By copying the arguments onto the inner lambda before passing it to
makeOverridable, we can make callPackage and callPackages behave the
same.
nix-repl> lib.functionArgs openssl.override
{ buildPackages = false; coreutils = false; cryptodev = false; enableSSL2 = true; enableSSL3 = true; fetchurl = false; lib = false; perl = false; removeReferencesTo = false; static = true; stdenv = false; withCryptodev = true; withPerl = true; }
|
||
|---|---|---|
| .. | ||
| modules | ||
| packages-from-directory | ||
| check-eval.nix | ||
| filesystem.sh | ||
| maintainer-module.nix | ||
| maintainers.nix | ||
| misc.nix | ||
| modules.sh | ||
| nix-for-tests.nix | ||
| release.nix | ||
| sources.sh | ||
| systems.nix | ||
| teams.nix | ||
| test-to-plist-expected.plist | ||
| test-with-nix.nix | ||