nix-shell shebang won't work with withPackages

[teto]

This is really annoying, for instance this won't work

#! /usr/bin/env nix-shell 
#! nix-shell -p 'python.withPackages(ps:with ps;[secretstorage keyring ])' ~/nixpkgs -i sh

You get a
syntax error, unexpected $undefined, at (string):1:94

If you remove spaces on the 2nd line (works only if you have 1 package) than it works

#! /usr/bin/env nix-shell 
#! nix-shell -p python.withPackages(ps:[ps.keyring]) ~/nixpkgs -i sh

is fine

[copumpkin]

That's it, we finally have conclusive proof that it was a bad idea for Nix to not use commas in its list syntax 😜

[S-NA]

This seems like the now closed #627, is this a regression or does the distinction between single and double quotes matter?

[edolstra]

The problem is actually 'ps:with', which gets parsed as a URL. Try putting a space in between

nix-shell -p 'python.withPackages (ps: with ps; [secretstorage keyring ])'