Hello list, I am currently trying to create a Nix expression for plowshare [1]. I got a working version [2] already, since installation is quite straight forward. However, as mentioned in the pull request I am worrying about purity.
In particular the Bash script calls the curl binary. The first observation is that running one of plowshare's executables the curl binary is being found correctly. I think this is because curl is available in my PATH. > $ which curl > ~/.nix-profile/bin/curl I would have expected that this wouldn't be the case if I had removed curl from my environment. However, the following still yields the same result. > $ nix-env -e curl > $ which curl > ~/.nix-profile/bin/curl This also arises in a newly created shell and I can also execute the curl binary. I am guessing that curl is some kind of NixOS' standard environment. Is this correct? Is it considered an impurity that plowshare finds curl without depending on curl's derivation? If this is the case, is this impurity introduced by NixOS or by the Nix expression? If this is an issue, how would I solve it? Should I patch plowshare's Bash scripts to refer to the curl's derivation instead of `which curl`? Or even better, is there a wrapper for this kind of programs already? Regards, Alexander Foremny [1] http://code.google.com/p/plowshare/ [2] https://github.com/NixOS/nixpkgs/pull/117 _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
