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https://github.com/phadej/cabal-extras
A tool suite to aid Haskell development using `cabal-install`
https://github.com/phadej/cabal-extras
Last synced: 5 days ago
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A tool suite to aid Haskell development using `cabal-install`
- Host: GitHub
- URL: https://github.com/phadej/cabal-extras
- Owner: phadej
- Created: 2019-11-17T16:35:31.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2024-12-07T13:01:00.000Z (15 days ago)
- Last Synced: 2024-12-07T14:17:17.489Z (15 days ago)
- Language: Haskell
- Size: 4.52 MB
- Stars: 80
- Watchers: 5
- Forks: 18
- Open Issues: 26
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-cabal - `cabal-extras`
README
# cabal-extras
A tool suite to aid Haskell development using `cabal-install`.
There are four tools in this repository:
- `cabal-env`: An experiment on what `cabal install --lib` could be.
- `cabal-diff`: Compare API of different package versions
- `cabal-bundler`: (ab)use `cabal-install` solver to build standalone installation bundles
- `cabal-deps`: An experiment on what `cabal outdated` could be.
- `cabal-store-check`: A naive tool to try to repair cabal's nix-store
All tools are highly experimental, although I (Oleg Grenrus) use them daily.
There's also [`cabal-fmt`](https://hackage.haskell.org/package/cabal-fmt), a `.cabal` file formatter, but it's more standalone tool.
# Installation
To install individual executables from this repository,
1. Make sure you have `GHC-8.2` and `cabal-install-3.0` or later installed.
2. Clone it with `git clone https://github.com/phadej/cabal-extras.git`
3. Install individual executables with `make install-cabal-env`, `make install-cabal-deps` etc.
You can pass flags to `cabal install` by setting `INSTALL_FLAGS`, e.g.
```
make INSTALL_FLAGS="--installdir $HOME/bin --install-method copy" install-cabal-env
```
# Executables
## cabal-bundler
TBW
## cabal-diff
TBW
## cabal-deps
TBW
## cabal-env
### Synopsis
```
$ cabal-env optics
$ ghci
Prelude> import Optics
Prelude Optics>
```
TBW
## cabal-store-check
This is a small script which can find some broken packages in cabal nix-store.
It's a proof-of-concept of
- https://gitlab.haskell.org/ghc/ghc/merge_requests/2284
- https://github.com/haskell/cabal/issues/6060
### Synopsis
```
# Check if store package db is inconsistent
$ cabal-store-check
...
[ 0.64132] error: haskell-ci-0.3.20190327-98543f1828739a9ad62f8722220f5d812f7f4a13f6fe2745a286c227593452b9 interface file for HaskellCI is missing
...
# You can remove broken packages with, which would repair the state
$ cabal-store-check --repair
```
## cabal-store-gc
This is another small script to reduce size of cabal's nix-store.
### Synopsis
```bash
# Add possible current projects dependencies as in direct root,
# and print reclaiming information
$ cabal-store-gc
...
...
[ 16.89166] info: 262 components are referenced from the roots
[ 16.89714] info: 183 components are in the store
[ 16.89726] info: 393 components can be removed from the store
[ 17.71338] info: 2328 MB can be freed
# If you want to perform the cleanup
$ cabal-store-gc --collect
# For more information, see
$ cabal-store-gc --help
```
### Roots
There are three kind of roots, which retain the packages in the store:
- executables in `installdir`. These are automatic roots.
- packages references from environments in `~/.ghc/.../environments/...`. These are also automatic roots.
- indirect roots, which are links from `~/.cabal/store/roots` to `plan.json`s
elsewhere in the file system. Indirect links allow to retain development
project dependencies.
New indirect roots can be added with `--add-project-root` or `--add-root` actions.