HaskellでWebアプリを作ってみようと思ったので、その作業メモというか。
まずは、Webフレームワークの選定を行った。候補としては、
が有力。WASHは、ふつうのHaskellプログラミング ふつうのプログラマのための関数型言語入門でも一瞬触れられていたような記憶がある。が、なんとなくhttp://happstack.com/index.htmlが気に入ったので、そっちを導入してみることにする。HPの説明にしたがって、tutorialを導入してみる。
$ darcs get http://patch-tag.com/r/wchogg/happstack-tutorial/pullrepo happstack-tutorial
$ cabal install
普通にエラーになりました（エラーメッセージは残ってません）。cabalを入れないとだめらしいので、頑張って入れてみた。
$ wget http://hackage.haskell.org/packages/archive/cabal-install/0.8.2/cabal-install-0.8.2.tar.gz $ tar -zxf cabal-install-0.8.2.tar.gz $ cd cabal-install-0.8.2 $ sh ./bootstrap.sh
これもエラーメッセージが残っていないのですが、timeが無い的なことを言われて終了。ググってみたところ、下のような感じで入っているのかどうかは確認できるらしい。
$ ghc-pkg list time
どうも、そもそも入っていないらしい。aptで探してみたらあるっぽいので、apt-getでインストール。
$ sudo apt-get install libghc6-time-doc libghc6-time-prof libghc6-time-dev $ ghc-pkg list time
ちゃんと入ったぽいので、再びチャレンジ。
$ sh ./bootstrap.sh
インストールできたぽい？PATHの通った場所に出来たcabalを移動。
$ sudo cp .cabal/bin/cabal /usr/bin/ $ cabal --help This program is the command line interface to the Haskell Cabal infrastructure. See http://www.haskell.org/cabal/ for more information. Usage: cabal COMMAND [FLAGS] or: cabal [GLOBAL FLAGS] Global flags: -h --help Show this help text -V --version Print version information --numeric-version Print just the version number Commands: install Installs a list of packages. update Updates list of known packages list List packages matching a search string. info Display detailed information about a particular package. upgrade Upgrades installed packages to the latest available version fetch Downloads packages for later installation. unpack Unpacks packages for user inspection. check Check the package for common mistakes sdist Generate a source distribution file (.tar.gz). upload Uploads source packages to Hackage report Upload build reports to a remote server. init Interactively create a .cabal file. configure Prepare to build the package. build Make this package ready for installation. copy Copy the files into the install locations. haddock Generate Haddock HTML documentation. clean Clean up after a build. hscolour Generate HsColour colourised code, in HTML format. register Register this package with the compiler. test Run the test suite, if any (configure with UserHooks). help Help about commands For more information about a command use: cabal COMMAND --help To install Cabal packages from hackage use: cabal install foo [--dry-run] Occasionally you need to update the list of available packages: cabal update You can edit the cabal configuration file to set defaults: /home/***/.cabal/config
うまくいった気がするので、再度tutorialを入れてみる。
$ cd tmp/darcs/happstack-tutorial/ $ cabal install Resolving dependencies... [1 of 1] Compiling Main ( /tmp/haskell-src-exts-1.9.03187/haskell-src-exts-1.9.0/Setup.hs, /tmp/haskell-src-exts-1.9.03187/haskell-src-exts-1.9.0/dist/setup/Main.o ) Linking /tmp/haskell-src-exts-1.9.03187/haskell-src-exts-1.9.0/dist/setup/setup ... Configuring haskell-src-exts-1.9.0... setup: happy version >=1.17 is required but it could not be found. Configuring strict-concurrency-0.2.3... Preprocessing library strict-concurrency-0.2.3... Building strict-concurrency-0.2.3... [1 of 2] Compiling Control.Concurrent.MVar.Strict ( Control/Concurrent/MVar/Strict.hs, dist/build/Control/Concurrent/MVar/Strict.o ) Control/Concurrent/MVar/Strict.hs:63:12: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:65:26: Not in scope: `rnf' Control/Concurrent/MVar/Strict.hs:74:15: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:83:11: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:93:12: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:105:12: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:120:12: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:134:15: Not in scope: type constructor or class `NFData' Control/Concurrent/MVar/Strict.hs:146:14: Not in scope: type constructor or class `NFData' cabal: Error: some packages failed to install: HJScript-0.5.0 depends on haskell-src-exts-1.9.0 which failed to install. happs-tutorial-0.9.4 depends on strict-concurrency-0.2.3 which failed to install. happstack-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. happstack-data-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. happstack-helpers-0.51 depends on strict-concurrency-0.2.3 which failed to install. happstack-ixset-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. happstack-server-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. happstack-state-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. happstack-util-0.5.0.2 depends on strict-concurrency-0.2.3 which failed to install. haskell-src-exts-1.9.0 failed during the configure step. The exception was: ExitFailure 1 hsp-0.5.2 depends on haskell-src-exts-1.9.0 which failed to install. hsx-0.7.0 depends on haskell-src-exts-1.9.0 which failed to install. strict-concurrency-0.2.3 failed during the building phase. The exception was: ExitFailure 1
んー。どうも、strict-concurrency-0.2.3とやらがうまく入らないみたいだが、原因は分からず。直接落としてきても同じエラーが出たので、ここで詰み。ググってみたら、debianにはaptで取ってこれるhappstackがあるっぽいので、debianを入れてみようかな（今まで作業してたのはubuntu）。
で、どうせならWASHも試してみることに。
$ sh ./bootstrap.sh $ wget http://www.informatik.uni-freiburg.de/~thiemann/WASH/WashNGo-2.12.tgz $ tar xzvf WashNGo-2.12.tgz $ cd WashNGo-2.12/ $ cabal install Resolving dependencies... Configuring WashNGo-2.12... Warning: No 'build-type' specified. If you do not need a custom Setup.hs or ./configure script then use 'build-type: Simple'. Preprocessing library WashNGo-2.12... Preprocessing executables for WashNGo-2.12... Building WashNGo-2.12... WASH/CGI/CGIMonad.hs:1:15: Warning: -fno-monomorphism-restriction is deprecated: use -XNoMonomorphismRestriction or pragma {-# LANGUAGE NoMonomorphismRestriction#-} instead WASH/CGI/SubmitXX.hs:1:15: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances#-} instead WASH/CGI/CGIHistory.hs:10:17: Could not find module `Data.Map': it is a member of the hidden package `containers-0.2.0.1' Use -v to see a list of the files searched for. cabal: Error: some packages failed to install: WashNGo-2.12 failed during the building phase. The exception was: ExitFailure 1
