强制`stack`重建已安装的软件包 [英] Force `stack` to rebuild an installed package

问题描述

我经常安装一个依赖于外部库的软件包，然后设法将这些外部库移到其他位置，以便编译后的程序以一个加载程序错误退出。

在这些情况下，我只希望堆栈重新构建已安装的软件包，但我不明白这是如何实现的。 stack install --force-dirty 似乎不起作用，因为它只是试图在当前工作目录中重建项目。

---

最近的例子：

我很想看看 regex- pcre 需要在Windows系统上不存在的C库，所以我打了 stack install regex-pcre 。这很好，但后来我意识到我通过 stack s <$ c $安装了 mingw-w64-x86_64-pcre c> pacman 在此之前。我再次通过 pacman -R 删除它，并试图再次运行 stack install regex-pcre ，但没有重建它。由于上述原因， - force-dirty 也没有工作。 p> 更新：

基于@Michael Snoyman的评论，仅仅使用这个命令应该足以移除包：

  stack exec  -  ghc-pkg unregister --force regex-pcre 
  

原始答案：

我不知道这是否是受到认可的方式，但它似乎工作。这里是一个简介：

1. 找到版本的 ghc-pkg 程序您正在使用的GHC


2. 找到您的解析器版本的package-db目录


3. 运行 $ ghcpkg --package-db $ pkgdb unregister --force< package>


4. 同时从堆栈的预编译目录中移除包文件

假设我们要移除的软件包是 zlib-0.5.4.2 。

查找ghc-pkg

在〜/ .stack /适合你的编译器版本的ghc-pkg程序，例如〜/ .STACK /方案/ x86_64的-OSX / GHC-7.10.2 / bin中/ GHC-PKG 。调用这个 $ ghcpkg

查找软件包db

在〜/ .stack / snapshots下为您正在使用的解析器找到 pkgdb 目录，例如〜/ .STACK /快照/ x86_64的-OSX / LTS-3.1 / 7.10.2 /了pkgdb 。调用这个 $ pkgdb 。

取消注册包

运行：

  $ ghcpkg --package-db $ pkgdb unregister --force zlib-0.5 .4.2 
  

忽略任何有关损坏或中断软件包的警告。

您可以使用以下命令检查您的软件包是否已注册：

  $ ghcpkg --package -db $ pkgdb list | grep zlib 
  

从预编译目录

$ b 在〜/ .stack / precompiled 下找到名为 zlib-0.5.4.2 ，然后移除GHC的相关版本：

  find〜/ .stack / precompiled -name'zlib- *'
 / bin / rm -rf ... 
  

重新安装软件包

  stack --resolver = ... install zlib 
  

Stack应该报告它正在重建软件包。

I often install a package which depends on external libraries and manage to move those external libraries to other locations afterwards, so that compiled programs exit with a loader error.

In those cases I just want stack to rebuild an already installed package, but I don't see how that is possible. stack install --force-dirty doesn't seem to work, as it just tries to rebuild the project in the current working directory.

---

Recent example:

I'd liked to see whether regex-pcre requires a C library not present on Windows systems, so I hit stack install regex-pcre. That went fine, but then I realized I installed mingw-w64-x86_64-pcre via stacks pacman prior to this. I removed it again via pacman -R and tried to run stack install regex-pcre again, which did not rebuild it. Neither did adding --force-dirty work for the above reason.

解决方案

Update:

Based on @Michael Snoyman's comment just using this command should be enough to remove the package:

stack exec -- ghc-pkg unregister --force regex-pcre

Original Answer:

I don't know if it's the sanctioned way to do it, but it seems to work. Here is a synopsis:

1. Locate the ghc-pkg program for the version of GHC you are using
2. Locate the package-db directory for your resolver version
3. Run $ghcpkg --package-db $pkgdb unregister --force <package>
4. Also remove the package file from stack's precompiled directory

Suppose the package we want to remove is zlib-0.5.4.2.

Locating ghc-pkg

Under ~/.stack/programs find the ghc-pkg program appropriate for your compiler version, e.g. ~/.stack/programs/x86_64-osx/ghc-7.10.2/bin/ghc-pkg. Call this $ghcpkg

Locating the package db

Under ~/.stack/snapshots find the pkgdb directory for the resolver you are using, e.g. ~/.stack/snapshots/x86_64-osx/lts-3.1/7.10.2/pkgdb. Call this $pkgdb.

Unregister the package

Run:

$ghcpkg --package-db $pkgdb unregister --force zlib-0.5.4.2

Ignore any warnings about broken or breaking packages.

You can check to see if your package is registered or not with this command:

$ghcpkg --package-db $pkgdb list | grep zlib

Remove the package from the precompiled directory

Under ~/.stack/precompiled locate any directories named zlib-0.5.4.2 and remove the one for your the relevant version of GHC:

find ~/.stack/precompiled -name 'zlib-*'
/bin/rm -rf ...

Reinstall the package

stack --resolver=... install zlib

Stack should report that it is rebuilding the package.

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