从堆栈安装ghcjs

问题描述

我通过堆栈安装了GHC（这样 stack ghc - --version 显示GHC-7.10.3）

  $ stack install ghcjs 
 
使用隐式全局项目config 
从项目外部运行使用resolver：lts-5.2从隐式全局项目配置文件：/home/john/.stack/global-project/stack.yaml 
未找到以下目标软件包：ghcjs 
  

有些资源建议 ghcjs 有点实验性（尽管在更进一步的阶段）。

---

查看我想也许我可以找到 stack.yaml 并更改
$ b

  $ cat 〜/ .stack / global-project / stack.yaml 
＃这是隐式全局项目的配置文件，仅当
＃'stack'在真实项目之外运行时才会使用。这里的设置不适用于所有项目的
＃默认值。要更改堆栈的默认设置，请改为编辑
＃'/home/john/.stack/config.yaml'。 
＃
＃有关堆栈配置的更多信息，请参阅
＃http://docs.haskellstack.org/en/stable/yaml_configuration.html 
＃
 flags ：{} 
 extra-package-dbs：[] 
 packages：[] 
 extra-deps：[] 
 resolver：lts-5.2 
  

我们被告知看看 config.yaml ，它看起来同样空白。这是对的吗，我会走上死路？

  $ cat〜/ .stack / config.yaml 
＃此文件包含默认的非项目特定设置'stack'，在所有项目中使用
＃。有关堆栈配置的更多信息，请参阅
＃http://docs.haskellstack.org/en/stable/yaml_configuration.html 
＃
 {} 
  

我只想在堆栈中安装 ghcjs 。

解决方案

查看本页：

我会尝试：

1. 开始一个新的堆栈项目，例如 stack new js-test




2. 通过添加此节来修改stack.yaml文件上面提到的链接）：
   
   

    编译器：ghcjs-0.2.0.20160414_ghc-7.10.3 
   编译器检查：匹配-exact 
    setup-info：
    ghcjs：
   来源：
    ghcjs-0.2.0.20160414_ghc-7.10.3：
   网址：https：//s3.amazonaws .com / ghcjs / ghcjs-0.2.0.20160414_ghc-7.10.3.tar.gz 
    sha1：6d6f307503be9e94e0c96ef1308c7cf224d06be3 
     




3. 将解析器：更改为lts-5.12 - 与上面的节匹配。




4. 运行 stack setup 以安装编译器。

第4步需要一段时间。

I have GHC installed through stack ( so that stack ghc -- --version shows GHC-7.10.3 )

$ stack install ghcjs

Run from outside a project, using implicit global project config
Using resolver: lts-5.2 from implicit global project's config file: /home/john/.stack/global-project/stack.yaml
The following target packages were not found: ghcjs

Some resources suggest ghcjs is somewhat experimental (though in the further stages).

---

Looking at http://docs.haskellstack.org/en/stable/ghcjs/ I thought maybe I could find stack.yaml and change it.

$ cat ~/.stack/global-project/stack.yaml
# This is the implicit global project's config file, which is only used when
# 'stack' is run outside of a real project.  Settings here do _not_ act as
# defaults for all projects.  To change stack's default settings, edit
# '/home/john/.stack/config.yaml' instead.
#
# For more information about stack's configuration, see
# http://docs.haskellstack.org/en/stable/yaml_configuration.html
#
flags: {}
extra-package-dbs: []
packages: []
extra-deps: []
resolver: lts-5.2

We are told to look at config.yaml which looks equally blank. Is this even right, am I going up a dead end?

$ cat ~/.stack/config.yaml
# This file contains default non-project-specific settings for 'stack', used
# in all projects.  For more information about stack's configuration, see
# http://docs.haskellstack.org/en/stable/yaml_configuration.html
#
{}

I just want to install ghcjs with stack.

解决方案

Have a look at this page: http://docs.haskellstack.org/en/stable/ghcjs/

I would try:

1. Start a new stack project, e.g. stack new js-test

2. Modify the stack.yaml file by adding this stanza (taken from the above mentioned link):

   compiler: ghcjs-0.2.0.20160414_ghc-7.10.3
   compiler-check: match-exact
   setup-info:
     ghcjs:
       source:
         ghcjs-0.2.0.20160414_ghc-7.10.3:
           url: https://s3.amazonaws.com/ghcjs/ghcjs-0.2.0.20160414_ghc-7.10.3.tar.gz
           sha1: 6d6f307503be9e94e0c96ef1308c7cf224d06be3
   

3. Change the resolver: to lts-5.12 - this matches the above stanza.

4. Run stack setup to get the compiler installed.

Step 4 will take a while.

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