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unsupporting GHC < 8.6.5 in the nix-shell

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akhesaCaro 2021-09-12 10:49:43 +02:00 committed by akhesacaro
parent 8da966f057
commit b1a9876dc9
2 changed files with 16 additions and 7 deletions
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17
nix/README.md
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@ -23,7 +23,18 @@ $ nix-shell nix/shell.nix --argstr compiler ghcHEAD
``` ```
**Possible GHC versions** **Possible GHC versions**
- `ghc822Binary` - `ghc865Binary`
- `ghc865`
- `ghc884` - `ghc884`
- `ghc8102` - default - `ghc8104` - default
### Cabal users
GHC version can be chosen via the nix-shell parameter
`cabal build all`
### Stack version
Since the ghc version is set by the LTS version, it is preferable to use the `ghc8104` version parameter for the nix-shell.
`stack --no-nix --system-ghc <command>`

6
nix/shell.nix
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@ -1,9 +1,7 @@
let nixos = fetchTarball { let nixos = fetchTarball { url = "https://github.com/NixOS/nixpkgs/archive/refs/tags/21.05.tar.gz";
url = "https://releases.nixos.org/nixos/20.09/nixos-20.09.3505.12d9950bf47/nixexprs.tar.xz";
sha256 = "0fsl8bsdb8i536pfs4wrp0826h5l84xqlwx32sbz66jg4ykqp9lr";
}; in }; in
{ compiler ? "ghc8102" { compiler ? "ghc8104"
, tutorial ? false , tutorial ? false
, pkgs ? import nixos { config = {}; } , pkgs ? import nixos { config = {}; }
}: }: