Change:
<del> { stdenvNoCC }: </del> <ins> { 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 */ </ins> args: <del> # This is a wrapper around `substitute` in the stdenv. # The `replacements` attribute should be a list of list of arguments # to `substitute`, such as `[ "--replace" "sourcetext" "replacementtext" ]` stdenvNoCC.mkDerivation ({ </del> <ins> let </ins> name = if args ? name then args.name else baseNameOf (toString args.src); <ins> 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 = [ ${deprecationReplacement} ];''; in optionalDeprecationWarning stdenvNoCC.mkDerivation ({ inherit name; </ins> builder = ./substitute.sh; inherit (args) src; preferLocalBuild = true; allowSubstitutes = false; <del> } // args // { replacements = args.replacements; }) </del> <ins> } // args // lib.optionalAttrs (args ? substitutions) { substitutions = assert lib.assertMsg (lib.isList args.substitutions) '' pkgs.substitute: For "${name}", `substitutions` is passed, which is expected to be a list, but it's a ${builtins.typeOf args.substitutions} instead.''; lib.escapeShellArgs args.substitutions; }) </ins>

Discussion:
Using with , currently does not allow me to replace a string that contains spaces. Steps to reproduce the behavior: the code below: It gives the following error: I tried quoting it, escaping the spaces... but none of them seemed to work. The I did succeeds. If applicable, add screenshots to help explain your problem. Add any other context about the problem here. I posted this in the NixOS matrix room a while ago (but I forgot to submit an issue): !$ People showed me some bash magic I couldn't understand, I think they might be helpful and worth checking out. <!-- Please @ people who are in the list of the offending package or module. If in doubt, check for whoever last touched something. -- (git blame) cc (people in the original conversation) Please run and paste the result. (I'm sorry if I described anything incorrectly, I'm a not a native English speaker and I am still trying to improve my language skills) Add a :+1: [reaction] to [issues you find important]. [reaction]: [issues you find important]:
Should be fixed with , please give it a try :)
Wonderful! It worked for me