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fixup! clear documentation

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Sam Halliday 2018-10-19 14:41:12 +01:00
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README.md
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@ -2,7 +2,7 @@
[![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) manages Haskell library dependencies and can select a specific version of `ghc` (see [`with-compiler`](https://cabal.readthedocs.io/en/latest/nix-local-build.html#cfg-flag---with-compiler)). However, `cabal` will fail if the required version is not available and many operating systems do not offer a way to install specific versions of `ghc`.
Although [`cabal-install`](https://hackage.haskell.org/package/cabal-install) manages Haskell library dependencies and can select a specific version of `ghc` (see [`with-compiler`](https://cabal.readthedocs.io/en/latest/nix-local-build.html#cfg-flag---with-compiler)), it will fail if the required version of `ghc` is not available. Unfortunately, many operating systems do not offer a way to install specific 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.
@ -15,10 +15,8 @@ Inspired by [rustup](https://github.com/rust-lang-nursery/rustup.rs), [pyenv](ht
## Table of Contents
* [Installation](#installation)
* [How](#how)
* [Usage](#usage)
* [Contributing](#contributing)
* [TODO](#todo)
* [Known problems](#known-problems)
## Installation
@ -39,22 +37,6 @@ Then adjust your `PATH` in `~/.bashrc` (or similar, depending on your shell) lik
export PATH="$HOME/.cabal/bin:$HOME/.ghcup/bin:$HOME/.local/bin:$PATH"
```
## How
Installs a specified GHC version into `~/.ghcup/ghc/<ver>`,
and places `ghc-<ver>` etc. symlinks in `~/.ghcup/bin/`.
Additionally allows to manage currently selected ghc
via unversioned symlinks.
This uses precompiled GHC binaries that have been
compiled on fedora/debian by
[upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries).
Alternatively, you can also tell it to compile from source (note that this might
fail due to missing requirements).
In addition this script can also install `cabal-install`.
## Usage
See `ghcup --help`.
@ -66,16 +48,12 @@ See `ghcup --help`.
* use [shellcheck](https://github.com/koalaman/shellcheck) and `checkbashisms.pl` from [debian devscripts](http://http.debian.net/debian/pool/main/d/devscripts/devscripts_2.18.4.tar.xz)
* whitespaces, no tabs
## TODO
- [ ] FreeBSD support ([#4](https://github.com/haskell/ghcup/issues/4))
- [ ] Make fetching tarballs more robust ([#5](https://github.com/haskell/ghcup/issues/5))
- [x] More code documentation
- [x] Allow to compile from source ([#2](https://github.com/haskell/ghcup/issues/2))
- [x] Allow to install cabal-install as well ([#3](https://github.com/haskell/ghcup/issues/3))
## Known problems
### Limited distributions supported
Currently only GNU/Linux distributions compatible with the [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries) binaries (built on Fedora) are supported.
### Precompiled binaries
Since this uses precompiled binaries you may run into