It causes a lot of issues. To make this work:
* `shellFor` is updated to use `getAllComponents` instead of `.all`.
* `getAllComponents` is updated to work on the package rather than
the package config.
* Tests updated to not use `.library` or `.exes.X` where appropriate.
* Documentation updated.
* Out of date examples removed.
As a bonus `shellFor` now takes a `components` argument that might be
useful for limiting the dependencies of the shell to just the ones
needed for the components you intend to work on.
Changes to the interface of haskell.nix (from the changelog.md file):
* Removed `sources.nixpkgs-default`, use `sources.nixpkgs` instead.
* Removed `./nixpkgs` directory, use `(import ./. {}).sources`
or `./nix/sources.nix` instead.
* Removes V1 interface for details on how to fix old code see:
https://github.com/input-output-hk/haskell.nix/issues/709
* Removed defaultCompilerNixName.
* cabalProject, cabalProject', hackage-project and hackage-package
now require a `compiler-nix-name` argument.
* `haskell-nix.tool` and `.tools` now require a `compiler-nix-name` argument.
New functions `p.tool` and `p.tools` (where p is a project) do not.
Like `shellFor { tools = ... }` they will use the compiler nix name
from the project (including stack projects where it is derived from
the resolver).
* `haskell-nix.alex` and `haskell-nix.happy` have been removed. Use
`p.tool "alex" "3.2.5"` or `shellFor { tools = { alex = "3.2.5"; } }`.
* `haskell-nix.nix-tools` -> `haskell-nix.nix-tools.ghc883` (it includes
the hpack exe now).
* `haskell-nix.cabal-install` ->
`p.tool "cabal" "3.2.0.0"` or `shellFor { tools = { cabal = "3.2.0.0"; } }`
* `haskell-nix.haskellNixRoots` -> `haskell-nix.roots ghc883` or `p.roots`
Other changes:
Adds hpack executable to the nix-tools derivations.
Adds a `cabal-hpack` test to make sure `hpack` works with
`cabalProject`.
Reduces the number of calls to `cabalProject` (particularly when
checking materialization), by giving internal tools a per-compiler
attribute.
Uses happy 1.19.12 when building newer ghc versions.
Updates cabal-install 3.2.0.0 to use the source from github that
is compatible with ghc 8.10.1.
Updates the docs for callCabalProjectToNix.
Adds a license mapping to fix a common warning.
* 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
Generalized version of the `cabalProject` and `stackProject`
functions.
Automatically selects the correct project type based on the
`projectFileName` argument if provided or what files exist in
the `src` directory if no `projectFileName` was specified.
If it cannot be determined which it should use the following
error message is given:
```
error: haskell-nix.project : both `stack.yaml` and `cabal.project` files exist set `projectFileName = "stack.yaml;"` or `projectFileName = "cabal.project";`
```
Asad Saeeduddin
John A. Lotoski
Hamish Mackenzie
Domen Kožar
Arian van Putten
Toon Nolten