{ lib, stdenvNoCC }: /* This is a wrapper around `substitute` in the stdenv. Attribute arguments: - `name` (optional): The name of the resulting derivation - `src`: The path to the file to substitute - `substitutions`: The list of substitution arguments to pass See https://nixos.org/manual/nixpkgs/stable/#fun-substitute - `replacements`: Deprecated version of `substitutions` that doesn't support spaces in arguments. Example: ```nix { substitute }: substitute { src = ./greeting.txt; substitutions = [ "--replace" "world" "paul" ]; } ``` See ../../test/substitute for tests */ args: let name = if args ? name then args.name else baseNameOf (toString args.src); deprecationReplacement = lib.pipe args.replacements [ lib.toList (map (lib.splitString " ")) lib.concatLists (lib.concatMapStringsSep " " lib.strings.escapeNixString) ]; optionalDeprecationWarning = # substitutions is only available starting 24.05. # TODO: Remove support for replacements sometime after the next release lib.warnIf (args ? replacements && lib.isInOldestRelease 2405) '' pkgs.substitute: For "${name}", `replacements` is used, which is deprecated since it doesn't support arguments with spaces. Use `substitutions` instead: substitutions = [ ${deprecationReplacement} ];''; in optionalDeprecationWarning stdenvNoCC.mkDerivation ( { inherit name; builder = ./substitute.sh; inherit (args) src; preferLocalBuild = true; allowSubstitutes = false; } // args // lib.optionalAttrs (args ? substitutions) { substitutions = assert lib.assertMsg (lib.isList args.substitutions) ''pkgs.substitute: For "${name}", `substitutions` is passed, which is expected to be a list, but it's a ${builtins.typeOf args.substitutions} instead.''; lib.escapeShellArgs args.substitutions; } )