這可能是最傻瓜化的在vscode下的haskell配置介紹文章

為什么要寫這篇文章？

在自己寫搭建環(huán)境的過程中，搜了一些博文，有些真的及其不服責(zé)任和敷衍，草草幾句話就帶過，但是在google上排名還很高，帶著一種鄙視這些文章的態(tài)度，于是寫下這篇文章，希望給后面的人有幫助

安裝haskell

我的平臺(tái)：deepin-15.8，基于debian8，(ubuntu等應(yīng)該沒太大區(qū)別

這里是一份haskell的學(xué)習(xí)指南，粗略介紹了安裝，資源等一些東西
根據(jù)上面鏈接的內(nèi)容，我們可以得知：
不推薦使用Haskell-platform直接安裝
也不太推薦使用cabel

更推薦使用stack安裝
官網(wǎng)安裝文檔

安裝

For many Un*x operating systems, all you need to do is run://對(duì)于unix類系統(tǒng)

curl -sSL https://get.haskellstack.org/ | sh

or:

wget -qO- https://get.haskellstack.org/ | sh

(對(duì)于windows系統(tǒng))On Windows, you can download and install the Windows 64-bit Installer.

創(chuàng)建你的project:

stack new my-project cd my-project stack setup stack build stack exec my-project-exe

• The stack new command will create a new directory containing all the needed files to start a project correctly.
• The stack setup will download the compiler if necessary in an isolated location (default ~/.stack) that won't interfere with any system-level installations. (For information on installation paths, please use the stack path command.).
• The stack build command will build the minimal project.
• stack exec my-project-exe will execute the command.
• If you just want to install an executable using stack, then all you have to do is stack install <package-name>.

注意，linux系統(tǒng)最好將~/.local/bin加入PATH中

換源

畢竟源在國外，所以我們首先必須要進(jìn)行換源，幸好清華大學(xué)開源網(wǎng)站鏡像站有提供，更具體一點(diǎn)可以看Stackage 鏡像使用說明，這里記錄下

vim ~/.stack/config.yaml # add package-indices: - name: Tsinghuadownload-prefix: https://mirrors.tuna.tsinghua.edu.cn/hackage/package/http: https://mirrors.tuna.tsinghua.edu.cn/hackage/00-index.tar.gz setup-info: "http://mirrors.tuna.tsinghua.edu.cn/stackage/stack-setup.yaml" urls:latest-snapshot: http://mirrors.tuna.tsinghua.edu.cn/stackage/snapshots.jsonlts-build-plans: http://mirrors.tuna.tsinghua.edu.cn/stackage/lts-haskell/nightly-build-plans: http://mirrors.tuna.tsinghua.edu.cn/stackage/stackage-nightly/ # 開始使用stack，這個(gè)命令需要稍稍等待 stack setup # 安裝完成之后 stack ghci # 會(huì)出現(xiàn)以下輸出 Configuring GHCi with the following packages: GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help Loaded GHCi configuration from /private/var/folders/0s/j3c0tlx10z9_x9wzhl14xmgh0000gn/T/ghci11066/ghci-script Prelude>

搭建vscode

打開vscode，下載extension，這里我推薦這四個(gè)插件：Haskell Syntax Highlighting、Haskell ghc-mod 、haskell-linter、Haskelly，其中第四個(gè)插件離不開stack。
要想使用以上插件，必須安裝以下幾個(gè)包：

# for Haskell ghc-mod stack install ghc-mod # for haskell-linter stack install hlint # for Haskelly stack install intero stack install QuickCheck stack install stack-run

安裝時(shí)可能出現(xiàn)問題

ghc-mod安裝時(shí)如果報(bào)錯(cuò)

stackoverflow上的解決辦法
我采用了
stack install ghc-mod --resolver lts-8.24去解決

stack-run安裝報(bào)錯(cuò)

github issue

I found a workaround.

Create a file: ~/.stack/global-project/stack-cabal-1.24.yaml

flags: {} extra-package-dbs: [] packages: [] extra-deps: [] resolver: lts-8.24

Basically it's using an old stack lts that was from around the time the last update to stack-run was >made.

Then just run this:

stack --stack-yaml ~/.stack/global-project/stack-cabal-1.24.yaml install stack-run

and it should work (did for me, at least)

intero安裝報(bào)錯(cuò)

stack install --resolver lts-6.6 intero-0.1.15去解決

vscode 插件配置

然后打開vscode的配置文件，加上ghc-mod和hlint的路徑，如下：

"haskell.ghcMod.executablePath": "/home/.local/bin/ghc-mod", "haskell.hlint.executablePath": "/home/.local/bin/hlint"

總結(jié)

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