[Nix-dev] Building with default.nix

[Lancelot SIX]

Hi,
You could have a `shell.nix` file as follows:
    import ./default.nix { sampleproject = { outPath = ""; name = "sampleproject"; } ; }
This is hacky but with that you will not copy the project tree into the nix store when runninx `nix-shell` (this will only be done when running `nix-build`). I think this is half way to what you are looking for.Hope this helps.
Cheers
Lancelot
Le lundi 08 août 2016 à 22:15 +0100, Rodney Lorrimar a écrit :
> Hello nix-dev,
> 
> I was wondering, what is the best way to develop a project outside of
> nixpkgs? My current method is something like this:
> 
>     # default.nix
>     { sampleproject ? { outPath = ./.; name = "sampleproject"; }
>     , pkgs ? import <nixpkgs> {}
>     }:
>     with pkgs.python35Packages;
>     buildPythonPackage rec {
>       name = "sampleproject-${version}";
>       version = "1.2.0";
>       src = [ sampleproject ];
>       propagatedBuildInputs = [ peppercorn ];
>     };
> 
> (Full project example here: https://github.com/rvl/sampleproject)
> 
> In many ways it works well, but I'm not entirely happy.
> 
> The problem is that my entire work tree (and all the accumulated
> project
> cruft) gets copied into the nix store every time I run nix-build or
> nix-shell. This is slow and also prints the scary "may run out of
> memory" warning.
> 
> Is there a function to load only the tracked files from a git work
> tree?
> Ideally this function would result in same store path if the files
> are
> the same, so nothing need be rebuilt if no sources changed.
> 
> 
> Cheers,
> 
> Rodney
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> nix-dev at lists.science.uu.nl
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