A project for using PureScript and related tooling easily with Nix. Note that the purescript derivation used in nixpkgs is a derivative of the derivation from this project. See default.nix for more information on available versions.
See ci.nix in this repo for a Nix expression example to be used with nix-shell.
$ nix-shell ./ci.nixOr simply clone this repo, cd into it, and type nix-shell (which implicitly calls shell.nix).
I have written about how to use parts of Nix here: https://github.com/justinwoo/nix-shorts
Behold:
$ nix-env -f default.nix -iA purs
# or nix-env -if purs.nix
$ which purs
/home/justin/.nix-profile/bin/purs
$ purs --version
0.14.4Or by shell.nix:
{ pkgs ? import <nixpkgs> { } }:
let
easy-ps = import
(pkgs.fetchFromGitHub {
owner = "justinwoo";
repo = "easy-purescript-nix";
rev = "5716cd791c999b3246b4fe173276b42c50afdd8d";
sha256 = "1r9lx4xhr42znmwb2x2pzah920klbjbjcivp2f0pnka7djvd2adq";
}) {
inherit pkgs;
};
in
pkgs.mkShell {
buildInputs = [
easy-ps.purs-0_14_4
easy-ps.psc-package
];
}There is a flake.nix. To see what the flake.nix provides,
nix flake show github:justinwoo/easy-purescript-nix
You might need the flag --allow-import-from-derivation if youโre on an older version of Nix.
To get a deluxe PureScript development shell which includes the latest versions of everything,
nix develop github:justinwoo/easy-purescript-nix#deluxe
Create a custom nix develop shell with a flake.nix like this for example:
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
flake-utils.url = "github:numtide/flake-utils";
easy-purescript-nix.url = "github:justinwoo/easy-purescript-nix";
};
outputs = { nixpkgs, flake-utils, easy-purescript-nix, ... }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
easy-ps = easy-purescript-nix.packages.${system};
in
{
devShells = {
default = pkgs.mkShell {
name = "purescript-custom-shell";
buildInputs = [
easy-ps.purs-0_15_8
easy-ps.spago
easy-ps.purescript-language-server
easy-ps.purs-tidy
pkgs.nodejs-18_x
pkgs.esbuild
];
shellHook = ''
source <(spago --bash-completion-script `which spago`)
source <(node --completion-bash)
'';
};
};
}
);
}See the blog post about this here: https://github.com/justinwoo/my-blog-posts/blob/master/posts/2018-10-24-using-purescript-easily-with-nix.md
Raison d'etre: https://github.com/justinwoo/my-blog-posts/blob/master/posts/2019-04-29-why-easy-purescript-nix.md
Thanks to Pekka (@kaitanie) for making this work on NixOS.