I want to upgrade all packages, not just a specific one with cabal install --upgrade-dependencies.
I want to upgrade all packages, not just a specific one with cabal install
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I want to upgrade all packages, not just a specific one with cabal install --upgrade-dependencies.
This bit of shell hackery works for me on OS X:
EDIT: Now forces a reinstall, and avoids installing a package more than once when more than one version is present. Thanks for the comments!
EDIT YEARS LATER: Now that Cabal sandboxes and Stack exist, I strongly recommend against trying to upgrade packages in place. You’ll end up with far fewer headaches if you instead can just wipe out an existing sandbox and reinstall up-to-date dependencies.