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I used the latest Haskell Platform 7.10.2-a (https://www.haskell.org/platform/mac.html) on Mac OS X 10.11 for El-capitan.

When I tried to install yesod with cabal install yesod, I have multiple error messages such as:

Building email-validate-2.1.3...
Building http-api-data-0.2.1...
Building fast-logger-2.4.1...
Building http-date-0.0.6.1...
Failed to install crypto-random-0.0.9
Build log ( /Users/smcho/.cabal/logs/crypto-random-0.0.9.log ):
Configuring crypto-random-0.0.9...
Building crypto-random-0.0.9...
Preprocessing library crypto-random-0.0.9...
<command line>: cannot satisfy -package-id vector-0.11.0.0-730f99979d41c11c3a1ef069844b5f57
    (use -v for more information)
Failed to install email-validate-2.1.3
Build log ( /Users/smcho/.cabal/logs/email-validate-2.1.3.log ):
Configuring email-validate-2.1.3...

The error pattern is pretty much the same: cannot satisfy -package-id.

For example, cabal install aeson gives cannot satisfy -package-id attoparse... error. 

Resolving dependencies...
Configuring aeson-0.10.0.0...
Building aeson-0.10.0.0...
Failed to install aeson-0.10.0.0
Build log ( /Users/smcho/.cabal/logs/aeson-0.10.0.0.log ):
Configuring aeson-0.10.0.0...
Building aeson-0.10.0.0...
Preprocessing library aeson-0.10.0.0...
<command line>: cannot satisfy -package-id attoparsec-0.13.0.1-99b4df28644e63383f308c810764a8bb
    (use -v for more information)
cabal: Error: some packages failed to install:
aeson-0.10.0.0 failed during the building phase. The exception was:
ExitFailure 1

However, attoparsec library seems to be installed without problem. 

smcho@macho ~> cabal install attoparsec
Resolving dependencies...
All the requested packages are already installed:
attoparsec-0.13.0.1
Use --reinstall if you want to reinstall anyway.

What might be wrong?

prosseek
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3 Answers3

3

As suggested here, the cannot satisfy -package-id error you're seeing might be due to an out of date cache.

If running ghc-pkg check warns you that your cache is out of date, then running ghc-pkg recache might resolve your issues.

I've been running into the cannot satisfy -package-id problem all morning (not with yesod, but with various other packages). ghc-pkg recache resolved my issues. Hope this helps.

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liminalisht
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This might be controversial, but imho the haskell platform and cabal (when used directly) are both essentially deprecated now with the advent of stack.

Stack will:

  1. Automatically install haskell for you (stack setup)
  2. Automatically sandbox (and intelligently share sandboxes between projects)
  3. Completely avoid cabal hell (in my experience)
jhickner
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I could install yesod from brew.

Uninstall haskell-plaftorm

  • /Library/Haskell/bin/uninstall-hs thru 7.10.2

Install ghc

  • brew install ghc
    • brew link ghc

Install stackage

  • brew install haskell-stack

Install Yesod

  • stack install yesod
  • stack install yesod-bin

Use Yesod

Use Yesod for development

  • I'm not sure, but I had to run stack exec yesod build first.
  • stack exec yesod devel.

Yesod deployment with keter

  • Remove the first line in config/keter.yaml
  • stack exec yesod keter, and you will get one binary in dist/bin that contains most of the necessary files to run.
  • Execute the binary as a standalone server.
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prosseek
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