在沙箱中的Cabal配置会抱怨“至少以下依赖项丢失”在已安装的包上 [英] Cabal configure in a sandbox complains "At least the following dependencies are missing" on installed packages

问题描述

我有一个项目，它在一个沙箱内，我在我的cabal文件中引入了一个测试套件，它在 hunit = build-depends = 1.2 * 。问题是当我尝试配置时：

$ cabal configure - 启用测试

解决依赖关系......

配置MyProject-0.1.0.0 ...

cabal：至少缺少以下依赖关系：

hunit == 1.2。*

还有其他一些尝试来解决它：

$ cabal install --dependencies-only

解决依赖关系...

所有请求的软件包已经安装完成：

使用--reinstall，如果您想要重新安装。

&

$ cabal install hunit

解决依赖关系。 ..
所有请求的软件包已经安装：
HUnit-1.2.5.2

如果您想要重新安装，请使用--reinstall。

&

$ cab $ install - 启用测试

解决依赖关系...
cabal：无法解决依赖关系：
正在尝试：MyProject-0.1.0.0（用户目标）

拒绝：MyProject-0.1 .0.0：！test（全局约束需要反向标志
选择）
试试：MyProject-0.1.0.0：*测试

下一个目标：hunit
失败（未知软件包：hunit）

依赖树彻底搜索。

- 重新安装 ing什么也没做。

我甚至玩过 - -user 和 - global 标志，即使我使用 cabal 而不是 runhaskell ，它并没有帮助。

我也尝试过删除&重新 init 沙箱。
我也尝试过 delete 沙箱，它仍然给了我同样的错误。
ghc-pkg check 找不到任何错误。

<

顺便说一下，我的一部分人怀疑cabal忽略了我的项目是在沙箱中，因为它不需要安装一些已经放在我的包上的软件包机;它在我的Windows上这样做（这是在Ubuntu上）。是否有可能得到检查？

Ubuntu 14.04.1 LTS

GHC版本：7.6.3

cabal-install版本：1.20.0.3
Cabal库版本：1.20.0.2

现在还试用cabal-install 1.16 .0.2没有成功。

解决方案

软件包名称在Cabal / Hackage中区分大小写，正确的软件包名称是 HUnit 。更改包含以下内容的cabal文件中的行：

  hunit == 1.2。* 
  
 
 
 
 
 
 
  HUnit == 1.2。* 
  
 
I have a project, it's inside a sandbox, I introduced a test-suite in my cabal file and it build-depends on hunit ==1.2.*. The problem is when I try to configure:

  
$ cabal configure --enable-tests

  Resolving dependencies...

  Configuring MyProject-0.1.0.0...

  cabal: At least the following dependencies are missing:

  hunit ==1.2.*
A few more attempts to get it to come around:

  
$ cabal install --dependencies-only

  Resolving dependencies...

  All the requested packages are already installed:

  Use --reinstall if you want to reinstall anyway.

&

  
$ cabal install hunit

  Resolving dependencies...

  All the requested packages are already installed:

  HUnit-1.2.5.2

  Use --reinstall if you want to reinstall anyway.
&

  
$ cabal install --enable-tests

  Resolving dependencies...

  cabal: Could not resolve dependencies:

  trying: MyProject-0.1.0.0 (user goal)

  rejecting: MyProject-0.1.0.0:!test (global constraint requires opposite flag
  selection)

  trying: MyProject-0.1.0.0:*test

  next goal: hunit (dependency of MyProject-0.1.0.0:*test)

  fail (unknown package: hunit)

  Dependency tree exhaustively searched.
--reinstalling did nothing.

I even played with the --user and --global flags, even tho I'm using cabal and not runhaskell, it doesn't help it.

I also tried to delete & re-init the sandbox.

I tried just deleteing the sandbox too, and it still gave me the same error.

ghc-pkg check finds nothing wrong.

What could it be?

By the way a part of me is suspicious that cabal ignores that my project is in a sandbox, since it didn't bother to install some packages that were already on my machine; it does so on my Windows (this is on Ubuntu). Is it possible to get that checked?

Ubuntu 14.04.1 LTS

GHC version: 7.6.3

cabal-install version: 1.20.0.3

Cabal library version: 1.20.0.2


Also tried now with cabal-install 1.16.0.2 without success.
解决方案
Package names are case sensitive in Cabal/Hackage, the correct package name is HUnit.  Change the line in your cabal file containing:
hunit ==1.2.*
To
HUnit ==1.2.*


                        
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