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fixup! add How back

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Sam Halliday 2018-10-19 16:54:13 +01:00
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[![Build Status](https://travis-ci.org/haskell/ghcup.svg?branch=master)](https://travis-ci.org/haskell/ghcup)
[![license](https://img.shields.io/github/license/haskell/ghcup.svg)](COPYING)
[`cabal-install`](https://hackage.haskell.org/package/cabal-install) follows the UNIX philosophy of [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy#Do_One_Thing_and_Do_It_Well): it builds your project and downloads your dependencies. However, `cabal-install` does not download `ghc` if one is needed ([it can demand that a specific version of `ghc` is available](https://cabal.readthedocs.io/en/latest/nix-local-build.html#cfg-flag---with-compiler)). Unfortunately, many operating systems do not offer a way to install multiple versions of `ghc`.
[`cabal-install`](https://hackage.haskell.org/package/cabal-install) follows the UNIX philosophy of [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy#Do_One_Thing_and_Do_It_Well): it builds your project by managing your dependencies. However, `cabal-install` does not download `ghc` if one is needed, although, it can demand that [a specific version](https://cabal.readthedocs.io/en/latest/nix-local-build.html#cfg-flag---with-compiler) of `ghc` is available. Unfortunately, many operating systems do not offer a way to install multiple versions of `ghc`.
`ghcup` makes it easy to install specific versions of `ghc` on GNU/Linux, and can also bootstrap a fresh Haskell developer environment from scratch.