error: makeCWrapper: Unknown argument --suffix-each

[PlumpMath]

nix log /nix/store/8bkvnsxz4kdkd77j9cp6irxc8j819771-python3-3.9.12-env.drv
created 258 symlinks in user environment
:9:6: error: makeCWrapper: Unknown argument --suffix-each
#error makeCWrapper: Unknown argument --suffix-each
^
:10:6: error: makeCWrapper: Unknown argument PATH
#error makeCWrapper: Unknown argument PATH
^
:11:6: error: makeCWrapper: Unknown argument :
#error makeCWrapper: Unknown argument :
^
:12:6: error: makeCWrapper: Unknown argument
#error makeCWrapper: Unknown argument
^
4 errors generated.

[bjornfor]

Weird, I was just hitting that as well. On phone now, but I think the problem was wide version mismatch between mach-nix and nixpkgs. Possibly bleeding nixpkgs (master branch) with mach-nix master.

[PlumpMath]

nixpkgs.url="github:nixos/nixpkgs/master";

pypi-deps-db={
url="github:DavHau/pypi-deps-db";
# inputs.nixpkgs.follows="nixpkgs"; <--- and
inputs.mach-nix.follows="mach-nix";
flake=false;
};

mach-nix={
  url="github:DavHau/mach-nix/master";
  # inputs.nixpkgs.follows="nixpkgs"; <--- It's the same if I take it out...
  inputs.pypi-deps-db.follows="pypi-deps-db";
  inputs.flake-utils.follows="flake-utils"; 
};

It is a little difficult to remove the nixpkgs-master. Is there no solution?

[PlumpMath]

I changed it to the stable version of nixpkgs and it worked fine. Stable version of nix-darwin, all replaced.

[kwbauson]

It's still happening for me on nixpkgs-unstable:

nix build mach-nix#gen.python.pip-helloworld --override-input nixpkgs nixpkgs/nixpkgs-unstable --override-input pypi-deps-db github:DavHau/pypi-deps-db

I've narrowed it down to this commit in nixpkgs NixOS/nixpkgs@7f802c7, but I'm not sure why that'd cause this issue

[bjornfor]

I've narrowed it down to this commit in nixpkgs NixOS/nixpkgs@7f802c7, but I'm not sure why that'd cause this issue

Because makeBinaryWrapper isn't 100% compatible with makeWrapper. Either it must be made more compatible, or mach-nix must adapt to use the new/simpler interface.

[bjornfor]

I made a PR to fix it: #445