<bebarker> I'd like to run a nix-shell with a derivation defined in a .nix file not in the nixpkgs tree - is this possible by some means?
<clever> bebarker: nix-shell vim.nix
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<clever> if the file doesnt need any arguments
<bebarker> clever, ok, I tried that, but the files in $out/bin appear to not be added to the PATH
<bebarker> i verified they are there, e.g.: /nix/store/g1zisjcq1wisxk2kppgy7gmx2l0zs56v-gurobi-7.5.1/bin/
<clever> bebarker: ahh, you want to use the result of it, not build it under the shell
<bebarker> yes!
<clever> bebarker: nix-shell -p '(import ./gurobi.nix)'
<clever> all -p does, is generate a dummy derivation to "build", and puts all of the arguments into the buildInputs
<clever> and its just dumb string manipulation, so you can inject code into that
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<bebarker> clever ooh, I've got to write that down now, I always find myself wanting to do this
<clever> bebarker: another option is to just write a second file, that does nothing and depends on gurobi
<bebarker> i may need to take that approach more as i start to pull in multiple custom packages anyway I suppose. thanks!
<clever> bebarker: i recently did that with https://gist.github.com/cleverca22/9c4a83b06121108607b54771a38ebbaa
<clever> bebarker: that allows me to just "nix-shell vim.nix" and i get a fully configured editor, without any lasting changes to the machine
<bebarker> great, that sounds like what I'm looking for
<clever> bebarker: as a nixos module that installs vim: https://github.com/cleverca22/nixos-configs/blob/master/vim.nix#L37
<clever> bebarker: and then just a dummy derivation i can shell into: https://gist.github.com/cleverca22/9c4a83b06121108607b54771a38ebbaa
