Virthualenvwrapper
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This document introduces virthualenvwrapper, a tool for Haskell that allows creating and managing isolated virtual environments for Haskell projects similarly to virtualenvwrapper for Python. It describes how to install virthualenvwrapper from GitHub, create a new virtual environment called "testenv", switch between environments, and list all existing environments. The goal is to provide a convenient way to manage multiple Haskell toolchains and package configurations.
Virthualenvwrapper
- 1. Virthualenvwrapper 三島Haskell無名関数の会#2 @kzfm
- 3. Virthualenvは Pythonのvirtualenv インスパイア (知ってるよね？)
- 6. install from Github $ git://github.com/kzfm/virthualenvwrapper.git $ cd virthualenvwrapper $ cabal install # add to .bashrc $ echo “source $HOME/Library/Haskell/ghc-7.4.2/lib/ virthualenvwrapper-0.1.0.0/share/virthualenvwrapper.sh” >> ~/.bashrc $ source ~/.bashrc
- 7. make new env $ mkvhenv testenv Use regular Haskell tools (ghc, ghci, ghc-pkg, cabal) to manage your Haskell environment. To exit from this virtual environment, enter command 'deactivate'. (testenv)localhost@kzfm:~ $
- 8. switch env $ deactivate Deactivating testenv Virtual Haskell Environment (at /Users/kzfm/.virthualenv/testenv). Restoring previous environment settings. localhost@kzfm:~ $ workhon yesod Activating yesod Virtual Haskell Environment (at /Users/kzfm/.virthualenv/yesod). Use regular Haskell tools (ghc, ghci, ghc-pkg, cabal) to manage your Haskell environment. To exit from this virtual environment, enter command 'deactivate'. (yesod)localhost@kzfm:~ $
- 9. list all env $ lsvirthualenv curl optparse snap testenv yesod
- 10. おしまい