Combine post install commands in 'postInst' and add 'postCopy' hook.
The creation of the 'git-annex-shell' symlink was in 'postInst' hook. I combined it with the man-page installation in a 'postInst' hook and a 'postCopy' hook. I don't understand how to use the `cabal copy` command, but the examples I looked at defined both hooks. Relevant comments from the source: * man-page installation: See http://www.haskell.org/haskellwiki/Cabal/Developer-FAQ#Installing_manpages. Based on pandoc's and lhs2tex's 'Setup.installManpages' and 'postInst' hooks. My understanding: 'postCopy' is run for `cabal copy`, 'postInst' is run for `cabal inst`, and copy is not a generalized install, so you have to write two nearly identical hooks. Summary of hooks: http://www.haskell.org/cabal/release/cabal-latest/doc/API/Cabal/Distribution-Simple-UserHooks.htm-- Other people are also confused: * Bug: 'postCopy' and 'postInst' are confusing: http://hackage.haskell.org/trac/hackage/ticket/718 * A cabal maintainer suggests using 'postCopy' instead of 'postInst', because `cabal install` is `cabal copy` followed by `cabal register`: http://www.haskell.org/pipermail/libraries/2008-March/009416.html Although that sounds desirable, it's not true, as the reply and experiments indicate. * the `cabal copy` command: ???: Not sure how you're supposed to use this. E.g., when I do cabal install --prefix=/tmp/git-annex-install cabal copy --deistdir=/tmp/git-annex-copy I get the copy under /tmp/git-annex-copy/tmp/git-annex-install Also, `cabal install` fails when given a relative --prefix.
This commit is contained in:
Nathan Collins
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1 changed files with 66 additions and 29 deletions
95
Setup.hs
95
Setup.hs
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@ -1,55 +1,92 @@
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{-# LANGUAGE NamedFieldPuns #-}
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{- cabal setup file -}
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import Distribution.Simple
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import Distribution.Simple.LocalBuildInfo
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import Distribution.Simple.Setup
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import Distribution.Simple.Utils (installOrdinaryFiles)
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import Distribution.Simple.Utils (installOrdinaryFiles, rawSystemExit)
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import Distribution.PackageDescription (PackageDescription(..))
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import Distribution.Verbosity (Verbosity)
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import System.Cmd
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import System.FilePath
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import qualified Build.Configure as Configure
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main = defaultMainWithHooks simpleUserHooks
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{ preConf = configure
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, instHook = install
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, postInst = const installManpages
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, postInst = myPostInst
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, postCopy = myPostCopy
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}
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configure _ _ = do
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Configure.run Configure.tests
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return (Nothing, [])
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install pkg_descr lbi userhooks flags = do
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r <- (instHook simpleUserHooks) pkg_descr lbi userhooks flags
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_ <- rawSystem "ln" ["-sf", "git-annex",
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bindir installDirs </> "git-annex-shell"]
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return r
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where
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installDirs = absoluteInstallDirs pkg_descr lbi $
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fromFlag (copyDest defaultCopyFlags)
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myPostInst :: Args -> InstallFlags -> PackageDescription
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-> LocalBuildInfo -> IO ()
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myPostInst _ (InstallFlags { installVerbosity }) pkg lbi = do
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installGitAnnexShell dest verbosity pkg lbi
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installManpages dest verbosity pkg lbi
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where
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dest = NoCopyDest
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verbosity = fromFlag installVerbosity
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-- ???: Not sure how you're supposed to use this. E.g., when I do
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--
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-- cabal install --prefix=/tmp/git-annex-install
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-- cabal copy --deistdir=/tmp/git-annex-copy
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--
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-- I get the copy under
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--
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-- /tmp/git-annex-copy/tmp/git-annex-install
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--
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-- Also, `cabal install` fails when given a relative --prefix.
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myPostCopy :: Args -> CopyFlags -> PackageDescription
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-> LocalBuildInfo -> IO ()
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myPostCopy _ (CopyFlags { copyDest, copyVerbosity }) pkg lbi = do
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installGitAnnexShell dest verbosity pkg lbi
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installManpages dest verbosity pkg lbi
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where
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dest = fromFlag copyDest
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verbosity = fromFlag copyVerbosity
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installGitAnnexShell :: CopyDest -> Verbosity -> PackageDescription
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-> LocalBuildInfo -> IO ()
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installGitAnnexShell copyDest verbosity pkg lbi =
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rawSystemExit verbosity "ln"
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["-sf", "git-annex", dstBinDir </> "git-annex-shell"]
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where
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dstBinDir = bindir $ absoluteInstallDirs pkg lbi copyDest
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-- See http://www.haskell.org/haskellwiki/Cabal/Developer-FAQ#Installing_manpages.
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--
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-- Based on pandoc's 'Setup.installManpages' and 'postInst' hook.
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-- Would be easier to just use 'rawSystem' as above.
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-- Based on pandoc's and lhs2tex's 'Setup.installManpages' and
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-- 'postInst' hooks.
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--
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-- XXX: lhs2tex installs man pages with the 'postCopy' hook.
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-- I chose 'postInst'. Pandoc uses both :P So, probably
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-- to use the 'postCopy' hook.
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-- My understanding: 'postCopy' is run for `cabal copy`, 'postInst' is
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-- run for `cabal inst`, and copy is not a generalized install, so you
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-- have to write two nearly identical hooks.
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--
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-- Summary of hooks:
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-- http://www.haskell.org/cabal/release/cabal-latest/doc/API/Cabal/Distribution-Simple-UserHooks.htm--
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-- Other people are also confused:
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--
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-- * Bug: 'postCopy' and 'postInst' are confusing:
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-- http://hackage.haskell.org/trac/hackage/ticket/718
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--
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-- * A cabal maintainer suggests using 'postCopy' instead of
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-- 'postInst', because `cabal install` is `cabal copy` followed by
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-- `cabal register`:
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-- http://www.haskell.org/pipermail/libraries/2008-March/009416.html
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-- Although that sounds desirable, it's not true, as the reply and
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-- experiments indicate.
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--
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-- XXX: fix tabs!
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installManpages :: InstallFlags -> PackageDescription -> LocalBuildInfo -> IO ()
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installManpages flags pkg lbi =
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installOrdinaryFiles verbosity dstManDir manpages
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installManpages :: CopyDest -> Verbosity -> PackageDescription
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-> LocalBuildInfo -> IO ()
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installManpages copyDest verbosity pkg lbi =
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installOrdinaryFiles verbosity dstManDir srcManpages
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where
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srcManDir = ""
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-- The 'NoCopyDest' means "don't add an additional path prefix".
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-- The pandoc Setup.hs uses 'NoCopyDest' in the post install hook
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-- and the 'CopyDest' from the copy flags in the post copy hook.
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dstManDir = mandir (absoluteInstallDirs pkg lbi NoCopyDest) </> "man1"
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manpages = zip (repeat srcManDir)
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[ "git-annex.1"
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, "git-annex-shell.1" ]
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verbosity = fromFlag $ installVerbosity flags
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dstManDir = mandir (absoluteInstallDirs pkg lbi copyDest) </> "man1"
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srcManpages = zip (repeat srcManDir) manpages
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srcManDir = ""
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manpages = ["git-annex.1", "git-annex-shell.1"]
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