ghc-pkg: 找不到软件包 ghc-7.10.2.20150906
ghc-pkg: cannot find package ghc-7.10.2.20150906
我需要公开一个包 ghc-7.10.2.20150906。
当我使用 "ghc-pkg list" 时，我看到这个：
但是当我试图通过 sudo ghc-pkg expose ghc-7.10.2.20150906 公开 ghc-7.10.2.20150906 时，我收到一条消息：
ghc-pkg: cannot find package ghc-7.10.2.20150906
有什么问题吗？还是有其他方法暴露它？
Cabal 文件：
-- This is the configuration file for the 'cabal' command line tool.
-- The available configuration options are listed below.
-- Some of them have default values listed.
-- Lines (like this one) beginning with '--' are comments.
-- Be careful with spaces and indentation because they are
-- used to indicate layout for nested sections.
remote-repo: hackage.haskell.org:http://hackage.haskell.org/packages/archive
remote-repo-cache: /home/valoisa/.cabal/packages
-- local-repo:
-- logs-dir:
world-file: /home/valoisa/.cabal/world
-- verbose: 1
-- compiler: ghc
-- with-compiler:
-- with-hc-pkg:
-- scratchdir:
-- program-prefix:
-- program-suffix:
-- library-vanilla: True
-- library-profiling: False
-- shared:
-- executable-dynamic: False
-- executable-profiling: False
-- optimization: True
-- library-for-ghci: False
-- split-objs: False
-- executable-stripping: True
-- user-install: True
-- package-db:
-- flags:
-- extra-include-dirs:
-- extra-lib-dirs:
extra-prog-path: /home/valoisa/.cabal/bin
-- tests: False
-- library-coverage: False
-- benchmarks: False
-- cabal-lib-version:
-- constraint:
-- preference:
-- solver: choose
-- documentation: False
-- doc-index-file: $datadir/doc/index.html
-- max-backjumps: 2000
-- reorder-goals: False
-- shadow-installed-packages: False
-- strong-flags: False
-- reinstall: False
-- avoid-reinstalls: False
-- force-reinstalls: False
-- upgrade-dependencies: False
-- root-cmd:
-- symlink-bindir:
build-summary: /home/valoisa/.cabal/logs/build.log
-- build-log:
remote-build-reporting: anonymous
-- one-shot: False
jobs: $ncpus
-- username:
-- password:
install-dirs user
-- prefix: /home/valoisa/.cabal
-- bindir: $prefix/bin
-- libdir: $prefix/lib
-- libsubdir: $arch-$os-$compiler/$pkgid
-- libexecdir: $prefix/libexec
-- datadir: $prefix/share
-- datasubdir: $arch-$os-$compiler/$pkgid
-- docdir: $datadir/doc/$arch-$os-$compiler/$pkgid
-- htmldir: $docdir/html
-- haddockdir: $htmldir
-- sysconfdir: $prefix/etc
install-dirs global
-- prefix: /usr/local
-- bindir: $prefix/bin
-- libdir: $prefix/lib
-- libsubdir: $arch-$os-$compiler/$pkgid
-- libexecdir: $prefix/libexec
-- datadir: $prefix/share
-- datasubdir: $arch-$os-$compiler/$pkgid
-- docdir: $datadir/doc/$arch-$os-$compiler/$pkgid
-- htmldir: $docdir/html
-- haddockdir: $htmldir
-- sysconfdir: $prefix/etc
program-locations
-- alex-location:
-- ar-location:
-- c2hs-location:
-- cpphs-location:
-- ffihugs-location:
-- gcc-location:
-- ghc-location:
-- ghc-pkg-location:
-- greencard-location:
-- haddock-location:
-- happy-location:
-- hmake-location:
-- hpc-location:
-- hsc2hs-location:
-- hscolour-location:
-- hugs-location:
-- jhc-location:
-- ld-location:
-- lhc-location:
-- lhc-pkg-location:
-- nhc98-location:
-- pkg-config-location:
-- ranlib-location:
-- strip-location:
-- tar-location:
-- uhc-location:
program-default-options
-- alex-options:
-- ar-options:
-- c2hs-options:
-- cpphs-options:
-- ffihugs-options:
-- gcc-options:
-- ghc-options:
-- ghc-pkg-options:
-- greencard-options:
-- haddock-options:
-- happy-options:
-- hmake-options:
-- hpc-options:
-- hsc2hs-options:
-- hscolour-options:
-- hugs-options:
-- jhc-options:
-- ld-options:
-- lhc-options:
-- lhc-pkg-options:
-- nhc98-options:
-- pkg-config-options:
-- ranlib-options:
-- strip-options:
-- tar-options:
-- uhc-options:
通常当你写一个更大的 Haskell 项目时，你会指定你想在项目特定的 Cabal 文件中使用的包，这里是一个使用 base包和 ghc 包，example.cabal:
name: example
version: 0.1.0.0
build-type: Simple
cabal-version: >=1.10
library
exposed-modules: AModule
build-depends: base >= 4.7 && < 5
, ghc
default-language: Haskell2010
要将 GHC 7.10.3 快照与此项目一起使用，您 运行 cabal configure --with-compiler=PATH/TO/ghc-7.10.3，然后您可以使用 cabal repl 在 GHCi 会话中使用依赖包访问您的项目。
如果您真的想公开 ghc 包，您的问题似乎是 sudo ghc-pkg 调用不是来自 7.10.3 快照的 ghc-pkg，如行
flag db stack: ["/home/valoisa/.ghc/x86_64-linux-7.10.2/package.conf.d","/usr/local/lib/ghc-7.10.2/package.conf.d"]
在您发布的 sudo ghc-pkg -v2 expose ghc 的 output 中。
我可以看到两种可能的解决方案
- 不要使用
sudo，因为似乎使用了正确版本的 ghc-pkg（我想不出有什么理由在这里使用 sudo）。
- 通过指定程序的完整路径来使用正确的
ghc-pkg。
我需要公开一个包 ghc-7.10.2.20150906。
当我使用 "ghc-pkg list" 时，我看到这个：
但是当我试图通过 sudo ghc-pkg expose ghc-7.10.2.20150906 公开 ghc-7.10.2.20150906 时，我收到一条消息：
ghc-pkg: cannot find package ghc-7.10.2.20150906
有什么问题吗？还是有其他方法暴露它？
Cabal 文件：
-- This is the configuration file for the 'cabal' command line tool.
-- The available configuration options are listed below.
-- Some of them have default values listed.
-- Lines (like this one) beginning with '--' are comments.
-- Be careful with spaces and indentation because they are
-- used to indicate layout for nested sections.
remote-repo: hackage.haskell.org:http://hackage.haskell.org/packages/archive
remote-repo-cache: /home/valoisa/.cabal/packages
-- local-repo:
-- logs-dir:
world-file: /home/valoisa/.cabal/world
-- verbose: 1
-- compiler: ghc
-- with-compiler:
-- with-hc-pkg:
-- scratchdir:
-- program-prefix:
-- program-suffix:
-- library-vanilla: True
-- library-profiling: False
-- shared:
-- executable-dynamic: False
-- executable-profiling: False
-- optimization: True
-- library-for-ghci: False
-- split-objs: False
-- executable-stripping: True
-- user-install: True
-- package-db:
-- flags:
-- extra-include-dirs:
-- extra-lib-dirs:
extra-prog-path: /home/valoisa/.cabal/bin
-- tests: False
-- library-coverage: False
-- benchmarks: False
-- cabal-lib-version:
-- constraint:
-- preference:
-- solver: choose
-- documentation: False
-- doc-index-file: $datadir/doc/index.html
-- max-backjumps: 2000
-- reorder-goals: False
-- shadow-installed-packages: False
-- strong-flags: False
-- reinstall: False
-- avoid-reinstalls: False
-- force-reinstalls: False
-- upgrade-dependencies: False
-- root-cmd:
-- symlink-bindir:
build-summary: /home/valoisa/.cabal/logs/build.log
-- build-log:
remote-build-reporting: anonymous
-- one-shot: False
jobs: $ncpus
-- username:
-- password:
install-dirs user
-- prefix: /home/valoisa/.cabal
-- bindir: $prefix/bin
-- libdir: $prefix/lib
-- libsubdir: $arch-$os-$compiler/$pkgid
-- libexecdir: $prefix/libexec
-- datadir: $prefix/share
-- datasubdir: $arch-$os-$compiler/$pkgid
-- docdir: $datadir/doc/$arch-$os-$compiler/$pkgid
-- htmldir: $docdir/html
-- haddockdir: $htmldir
-- sysconfdir: $prefix/etc
install-dirs global
-- prefix: /usr/local
-- bindir: $prefix/bin
-- libdir: $prefix/lib
-- libsubdir: $arch-$os-$compiler/$pkgid
-- libexecdir: $prefix/libexec
-- datadir: $prefix/share
-- datasubdir: $arch-$os-$compiler/$pkgid
-- docdir: $datadir/doc/$arch-$os-$compiler/$pkgid
-- htmldir: $docdir/html
-- haddockdir: $htmldir
-- sysconfdir: $prefix/etc
program-locations
-- alex-location:
-- ar-location:
-- c2hs-location:
-- cpphs-location:
-- ffihugs-location:
-- gcc-location:
-- ghc-location:
-- ghc-pkg-location:
-- greencard-location:
-- haddock-location:
-- happy-location:
-- hmake-location:
-- hpc-location:
-- hsc2hs-location:
-- hscolour-location:
-- hugs-location:
-- jhc-location:
-- ld-location:
-- lhc-location:
-- lhc-pkg-location:
-- nhc98-location:
-- pkg-config-location:
-- ranlib-location:
-- strip-location:
-- tar-location:
-- uhc-location:
program-default-options
-- alex-options:
-- ar-options:
-- c2hs-options:
-- cpphs-options:
-- ffihugs-options:
-- gcc-options:
-- ghc-options:
-- ghc-pkg-options:
-- greencard-options:
-- haddock-options:
-- happy-options:
-- hmake-options:
-- hpc-options:
-- hsc2hs-options:
-- hscolour-options:
-- hugs-options:
-- jhc-options:
-- ld-options:
-- lhc-options:
-- lhc-pkg-options:
-- nhc98-options:
-- pkg-config-options:
-- ranlib-options:
-- strip-options:
-- tar-options:
-- uhc-options:
通常当你写一个更大的 Haskell 项目时，你会指定你想在项目特定的 Cabal 文件中使用的包，这里是一个使用 base包和 ghc 包，example.cabal:
name: example
version: 0.1.0.0
build-type: Simple
cabal-version: >=1.10
library
exposed-modules: AModule
build-depends: base >= 4.7 && < 5
, ghc
default-language: Haskell2010
要将 GHC 7.10.3 快照与此项目一起使用，您 运行 cabal configure --with-compiler=PATH/TO/ghc-7.10.3，然后您可以使用 cabal repl 在 GHCi 会话中使用依赖包访问您的项目。
如果您真的想公开 ghc 包，您的问题似乎是 sudo ghc-pkg 调用不是来自 7.10.3 快照的 ghc-pkg，如行
flag db stack: ["/home/valoisa/.ghc/x86_64-linux-7.10.2/package.conf.d","/usr/local/lib/ghc-7.10.2/package.conf.d"]
在您发布的 sudo ghc-pkg -v2 expose ghc 的 output 中。
我可以看到两种可能的解决方案
- 不要使用
sudo，因为似乎使用了正确版本的ghc-pkg（我想不出有什么理由在这里使用 sudo）。 - 通过指定程序的完整路径来使用正确的
ghc-pkg。