haskell/haskell-language-server
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Add support for .env shells to flake.nix (#3322)

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The main motivation for this change is to enable development
of HLS plugins by generating a `.env` shell for every package in
this repository.

Example usage:

```ShellSession
$ nix develop .#haskell-language-server-dev-env.hls-fourmolu-plugin
```

This is a plain shell, though, without any tooling installed, identical
to the one that Nixpkgs provides by default.
This commit is contained in:
Gabriella Gonzalez 2022-11-09 07:53:07 -08:00 committed by GitHub
parent 5a8ccdbed0
commit 7c0201b509
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2 changed files with 27 additions and 1 deletions
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13
flake.lock
View File

@ -156,6 +156,18 @@
"url": "https://hackage.haskell.org/package/ghc-exactprint-1.5.0/ghc-exactprint-1.5.0.tar.gz"
}
},
"ghc-exactprint-160": {
"flake": false,
"locked": {
"narHash": "sha256-6fW4KSmDo7hi5i2C1lbI/rEyFWrowSGTNyaC+f73JaE=",
"type": "tarball",
"url": "https://hackage.haskell.org/package/ghc-exactprint-1.6.0/ghc-exactprint-1.6.0.tar.gz"
},
"original": {
"type": "tarball",
"url": "https://hackage.haskell.org/package/ghc-exactprint-1.6.0/ghc-exactprint-1.6.0.tar.gz"
}
},
"gitignore": {
"flake": false,
"locked": {
@ -322,6 +334,7 @@
"ghc-check": "ghc-check",
"ghc-exactprint": "ghc-exactprint",
"ghc-exactprint-150": "ghc-exactprint-150",
"ghc-exactprint-160": "ghc-exactprint-160",
"gitignore": "gitignore",
"hie-bios": "hie-bios",
"hiedb": "hiedb",

15
flake.nix
View File

@ -362,6 +362,10 @@
src = null;
};
mkEnvShell = hpkgs:
pkgs.lib.mapAttrs (name: value: hpkgs.${name}.env) pkgs.hlsSources;
# Create a hls executable
# Copied from https://github.com/NixOS/nixpkgs/blob/210784b7c8f3d926b7db73bdad085f4dc5d79428/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix#L16
mkExe = hpkgs:
@ -394,6 +398,15 @@
haskell-language-server-942-dev-nix = mkDevShellWithNixDeps ghc942 "cabal.project";
};
# The default shell provided by Nixpkgs for a Haskell package (i.e. the
# one that comes in the `.env` attribute)
envShells = {
haskell-language-server-dev-env = mkEnvShell ghcDefault;
haskell-language-server-902-dev-env = mkEnvShell ghc902;
haskell-language-server-924-dev-env = mkEnvShell ghc924;
haskell-language-server-942-dev-env = mkEnvShell ghc942;
};
allPackages = {
haskell-language-server = mkExe ghcDefault;
haskell-language-server-902 = mkExe ghc902;
@ -401,7 +414,7 @@
haskell-language-server-942 = mkExe ghc942;
};
devShells = simpleDevShells // nixDevShells // {
devShells = simpleDevShells // nixDevShells // envShells // {
default = simpleDevShells.haskell-language-server-dev;
};