https://github.com/monadfix/nix-cabal

Run cabal inside nix-shell
https://github.com/monadfix/nix-cabal

cabal-install haskell nix

Last synced: 10 months ago
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Run cabal inside nix-shell

• Host: GitHub
• URL: https://github.com/monadfix/nix-cabal
• Owner: monadfix
• License: other
• Created: 2018-11-13T12:41:13.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-07-26T17:35:02.000Z (over 6 years ago)
• Last Synced: 2025-03-22T07:43:23.655Z (10 months ago)
• Topics: cabal-install, haskell, nix
• Language: Shell
• Homepage:
• Size: 2.93 KB
• Stars: 14
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# nix-cabal

![nix-logo](https://user-images.githubusercontent.com/4061728/48418536-978bc480-e766-11e8-9206-44292ea5e0f1.png) ![cabal-logo](https://user-images.githubusercontent.com/4061728/48418551-a07c9600-e766-11e8-9b47-a6497986936d.png)

This is a small wrapper script to run `cabal` inside `nix-shell`. It assumes

`shell.nix` to be present in the current directory.

## Installation

Download the script to a location of your choice, for instance

`$HOME/.local/bin/`, and make it executable:

```bash

curl https://raw.githubusercontent.com/monadfix/nix-cabal/master/nix-cabal -o $HOME/.local/bin/nix-cabal

chmod u+x $HOME/.local/bin/nix-cabal

```

Make sure this location is in your `$PATH`.

## Usage

```bash

nix-cabal v2-build all

```

Here's an example of a `shell.nix` you might want to use with this script:

```nix

{

  pkgs ? import  {},

  hc ? "ghc844"

}:

pkgs.stdenv.mkDerivation rec {

  name = "example";

  buildInputs = [

    pkgs.haskell.compiler.${hc}

    pkgs.git

    pkgs.zlib

    pkgs.cabal-install

    pkgs.pkgconfig

    pkgs.which

  ];

  shellHook = ''

    export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath buildInputs}:$LD_LIBRARY_PATH

    export LANG=en_US.UTF-8

  '';

  LOCALE_ARCHIVE =

    if pkgs.stdenv.isLinux

    then "${pkgs.glibcLocales}/lib/locale/locale-archive"

    else "";

}

```

## Travis CI

Here's an example of a `.travis.yml`:

```yaml

language: nix

os:

  - linux

  - osx

env:

  - HC=ghc822

  - HC=ghc844

  - HC=ghc861

before_install:

  - curl https://raw.githubusercontent.com/monadfix/nix-cabal/master/nix-cabal -o nix-cabal && chmod u+x nix-cabal

  - travis_retry ./nix-cabal v2-update

script:

  - ./nix-cabal v2-test

  - ./nix-cabal v2-bench

cache:

  directories:

    - ~/.cabal

    - ~/.ghc

```