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Toon Nolten
5c4a0de2a1
* Make the haskell.nix import in the examples explicit
The examples used `import ./. {}` without explaining the commands should
be run from the haskell.nix repo root. To avoid confusion like this I
added fetching a tarball of the repo. This is less efficient when run
from the repo but works when run from anywhere and makes it clear we're
importing haskell.nix.
Added a couple urls and removed the urls on the lens component so as not
to confuse components with packages.
* Fix rephrase
The phrasing was left in a partially-rewritten state.
* Change wording and fix typo
* Minor fixes for consistency
2.1 KiB
2.1 KiB
Build a specific package from Hackage or Stackage
From a Stackage snapshot
To build a package, say lens, from a Stackage snapshot, say lts-13.28, you could run:
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'
This would build the (public) library component of the lens package as
fixed by the lts-13.28 stackage snapshot. Nightly snapshots like
nightly-2020-06-21 are also available.
A specific version from Hackage
To build any package from hackage, say lens, at any version, say 4.17.1, you could run:
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'
This would build the (public) library component of the lens-4.17.1 package from hackage.
Pinning hackage index
The dependencies would be resolved against the most recent hackage-index-state which comes with your haskell.nix checkout via the hackage.nix pin. A specific one can be specified as well:
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'
This would use the hackage index as of 2019-07-14T00:00:00Z to produce a
build plan for the lens-4.17.1 package.