Error when trying to run - readCreateProcessWithExitCode: runInteractiveProcess: exec: does not exist (No such file or directory)

[liamwigney]

Hey I tried first installing the version in nixpkgs but it's the old version where it fails to build due to a version constraint so I then tried to build from source.

I just git cloned the repo and used nix-build release.nix and tried to run the bin in the release directory. However regardless of calling it directly via ./update-nix-fetchgit or using ../../release/bin/update-nix-fetchgit the error in the title occurs.

On a side not I tried the instructions in the Readme for building from source to see if I could get it to work that way but after trying nix-shell and entering the new environment typing cabal build fails with command not found but that could be something to do with me being new to Nix or something.

Thanks!

[expipiplus1]

To solve your immediate problem: You probably don't have nix-prefetch-git installed.

Clearly we need to improve the build process too!

[liamwigney]

Once I've finished my rebuild of nixpkgs I'll try that thanks! Does it work for you? I don't understand nix yet so it's highly likely I just don't understand :)

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On 19 May 2017, at 7:35 pm, Joe Hermaszewski ***@***.***> wrote: To solve your immediate problem: You probably don't have nix-prefetch-git installed. Clearly we need to improve the build process too! — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[expipiplus1]

It's tempting to run some TH during build time which looks to see if the nix-prefetch-git executable is present in PATH and is in the nix store and if so use the full path.

This is incorrect when cross compiling however.