[Nix-dev] overriding a package

Catonano catonano at gmail.com
Sat Jan 31 18:29:06 CET 2015

2015-01-31 16:50 GMT+01:00 Bjørn Forsman <bjorn.forsman at gmail.com>:


> That's weird. I copy/pasted your code into my ~/.nixpkgs/config.nix
> and it worked just fine.
I removed it and reinstalled it again.

Now the sympthom is different

$ nix-env -i InfTaRacket
error: selector ‘InfTaRacket’ matches no derivations

$ nix-env -i myRacket
error: selector ‘myRacket’ matches no derivations

$ nix-env -qa racket

BUT if I decomment the line

#name = "${pname}-${version}";

then this is the result

$ nix-env -qa racket
error: undefined variable ‘pname’ at "/home/me/.nixpkgs/config.nix":9:16
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