Created
August 7, 2011 16:54
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error on installing ghc-mod with cabal.
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| Resolving dependencies... | |
| [1 of 1] Compiling Main ( /tmp/haskell-src-exts-1.11.16788/haskell-src-exts-1.11.1/Setup.hs, /tmp/haskell-src-exts-1.11.16788/haskell-src-exts-1.11.1/dist/setup/Main.o ) | |
| /tmp/haskell-src-exts-1.11.16788/haskell-src-exts-1.11.1/Setup.hs:1:1: | |
| Warning: In the use of `runTests' | |
| (imported from Distribution.Simple, but defined in Distribution.Simple.UserHooks): | |
| Deprecated: "Please use the new testing interface instead!" | |
| Linking /tmp/haskell-src-exts-1.11.16788/haskell-src-exts-1.11.1/dist/setup/setup ... | |
| Configuring haskell-src-exts-1.11.1... | |
| setup: The program happy version >=1.17 is required but it could not be found. | |
| cabal: Error: some packages failed to install: | |
| ghc-mod-0.6.0 depends on haskell-src-exts-1.11.1 which failed to install. | |
| haskell-src-exts-1.11.1 failed during the configure step. The exception was: | |
| ExitFailure 1 | |
| hlint-1.8.13 depends on haskell-src-exts-1.11.1 which failed to install. |
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resolved by
cabal install happy --global