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Add `cabal get --only-package-description` (#8263)

Artem Pelenitsyn authored 2 years ago

With this option, 'cabal get' writes to the destination directory only the
package description already available locally in one of the repository
indices.

The basename of the file name written to inside the target directory is
the package-id rather than only the package name.

This is mostly based on #1977

Co-authored-by: Miëtek Bak <mietek@bak.io>
Co-authored-by: Artem Pelenitsyn <a.pelenitsyn@gmail.com>

Co-authored-by: Herbert Valerio Riedel <hvr@gnu.org>
Co-authored-by: Miëtek Bak <mietek@bak.io>

5159ffbc

5159ffbc 2 years ago

Name	Last commit	Last update
.docker
.github
.gitlab
Cabal-QuickCheck
Cabal-described
Cabal-syntax
Cabal-tests
Cabal-tree-diff
Cabal
bootstrap
buildinfo-reference-generator
cabal-benchmarks
cabal-dev-scripts
cabal-install-solver
cabal-install
cabal-testsuite
changelog.d
doc
editors/vim
license-list-data
release-notes
solver-benchmarks
templates
.dockerignore
.git-blame-ignore-revs
.gitattributes
.gitignore
.gitlab-ci.yml
.mailmap
.readthedocs.yml
AUTHORS
CONTRIBUTING.md
LICENSE
Makefile
README.md
cabal.project
cabal.project.buildinfo
cabal.project.coverage
cabal.project.libonly
cabal.project.meta
cabal.project.release
cabal.project.validate
cabal.project.validate.libonly
cabal.project.weeder
generics-sop-lens.hs
ghc-packages
id_rsa_cabal_website.aes256.enc
release-checklist.md
stack.yaml
validate.sh
weeder.dhall

Cabal

This Cabal Git repository contains the following packages:

Cabal: the Cabal library package (license)
Cabal-syntax: the .cabal file format library (license)
cabal-install: the package containing the cabal tool (license)

The canonical upstream repository is located at https://github.com/haskell/cabal.

Installing cabal-install (by downloading the binary)

Prebuilt binary releases can be obtained from https://www.haskell.org/cabal/download.html. The cabal-install binary download for your platform should contain the cabal executable.

Installing cabal-install (preferred, with cabal-install)

Assuming that you have a pre-existing, recent version of cabal-install, run:

cabal install cabal-install

To get the latest version of cabal-install. (You may want to cabal update first.)

To install the latest version from the Git repository, clone the Git repository and then run:

cabal install --project-file=cabal.project.release cabal-install

Installing cabal-install without cabal-install

Assuming you don't have a pre-existing copy of cabal-install, look into bootstrap directory.