git.iko.soy/haskell.nix
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Update specific package building tutorial (#867)

Haskell.nix's `default.nix` is now a function that needs to be called and `hackage-package` can no longer rely on the default internal GHC so `compiler-nix-name` needs to be specified explicitly.

commit7545dc496b239fd46ec403a6778a95863cbd462c authorToon Nolten <toonn@toonn.io> dateWed 7 Oct 2020, 01:18 (6 years ago) parentb129059
1 file changed+3−3
compare with iko/ghcjs-patch-master
unifiedsplit
docs/tutorials/building-package-from-stackage-hackage.md+3−3
docs/tutorials/building-package-from-stackage-hackage.md+3−3
@@ -6,7 +6,7 @@
66To build a package, say [lens][], from a Stackage snapshot, say
77[lts-13.28][], you could run:
88```bash
9−nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz")).nixpkgsArgs; haskell-nix.snapshots."lts-13.28").lens.components.library'
9+nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz") {}).nixpkgsArgs; haskell-nix.snapshots."lts-13.28").lens.components.library'
1010```
1111This would build the (public) library component of the [lens][] package as
1212fixed by the [lts-13.28][] stackage snapshot. Nightly snapshots like
@@ -17,7 +17,7 @@ fixed by the [lts-13.28][] stackage snapshot. Nightly snapshots like
1717To build any package from hackage, say [lens][], at any version, say 4.17.1,
1818you could run:
1919```bash
20−nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz")).nixpkgsArgs; (haskell-nix.hackage-package { name = "lens"; version = "4.17.1"; })).components.library'
20+nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz") {}).nixpkgsArgs; (haskell-nix.hackage-package { name = "lens"; version = "4.17.1"; compiler-nix-name = "ghc8102"; })).components.library'
2121```
2222This would build the (public) library component of the [lens-4.17.1][] package
2323from hackage.
@@ -28,7 +28,7 @@ The dependencies would be resolved against the most recent
2828[hackage-index-state][] which comes with your [haskell.nix][] checkout via the
2929[hackage.nix][] pin. A specific one can be specified as well:
3030```bash
31−nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz")).nixpkgsArgs; (haskell-nix.hackage-package { name = "lens"; version = "4.17.1"; index-state = "2019-07-14T00:00:00Z"; })).components.library'
31+nix build '(with import <nixpkgs> (import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz") {}).nixpkgsArgs; (haskell-nix.hackage-package { name = "lens"; version = "4.17.1"; compiler-nix-name = "ghc8102"; index-state = "2019-07-14T00:00:00Z"; })).components.library'
3232```
3333This would use the hackage index as of `2019-07-14T00:00:00Z` to produce a
3434build plan for the [lens-4.17.1][] package.