docs: update cabal version recommendation further
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#. **Do you have a new enough version of GHC ?**
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#. **Do you have a new enough version of GHC ?**
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Run `ghc --version`. hledger requires GHC 7.0 or greater
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Run `ghc --version`. hledger requires GHC 7.0 or greater
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(on [some platforms](#5551), 7.2.1 can be helpful).
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(and on [some platforms](#5551), 7.2.1+ can be helpful).
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#. **Do you have a new enough version of cabal ?**
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#. **Do you have a new enough version of cabal ?**
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Avoid ancient versions. `cabal --version` should report at least
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Avoid ancient versions, which are less capable and more confusing.
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0.10 (and 0.16 or greater is much better). You may be able to upgrade it with:
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`cabal --version` should probably report at least 1.16 (and for sandboxed
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installs, 1.18+). You may be able to upgrade it with:
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$ cabal update
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$ cabal update
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$ cabal install cabal-install
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$ cabal install cabal-install
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