nix run: An expression which is a function should be passed the result of evaluating -f

[mpickering]

It is a major annoyance that -f does not interact well with the expression evaluation mode in nix run.

My proposed API is that the expression passed to nix run should be a function which is then passed the result of evaluating the argument to -f.

Previously:

nix run "(import <nixpkgs> {}).haskellPackages.ghcWithPackages (p: [ p.lens ])"

With my proposed change:

nix run "pkgs: pkgs.haskellPackages.ghcWithPackages (p: [ p.lens ]"

nix run -f my-nixpkgs.nix "pkgs: pkgs.haskellPackages.ghcWithPackages (p: [ p.lens ]"

This adds flexibility as now -f can be added to replace the default and the resulting expression can remain unchanged.

[stale]

I marked this as stale due to inactivity. → More info

[stale]

I closed this issue due to inactivity. → More info