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`Cabal install` is fragile and can fail if the GHC on path is of an incompatible version.

Use ghcup to use a GHC version that is known to work.
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Jacob Tan En
2021-06-09 18:31:16 +08:00
committed by Inari Listenmaa
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@@ -49,15 +49,17 @@ You will probably need to update the `PATH` environment variable to include your
For more information, see [Using GF on Windows](https://www.grammaticalframework.org/~inari/gf-windows.html) (latest updated for Windows 10).
## Installing the latest release from source
## Installing the latest Hackage release (macOS, Linux, and WSL2 on Windows)
[GF is on Hackage](http://hackage.haskell.org/package/gf), so under
normal circumstances the procedure is fairly simple:
1. Install a recent version of the [Haskell Platform](http://hackage.haskell.org/platform) (see note below)
2. `cabal update`
3. On Linux: install some C libraries from your Linux distribution (see note below)
4. `cabal install gf`
1. Install ghcup https://www.haskell.org/ghcup/
2. `ghcup install ghc 8.10.4`
3. `ghcup set ghc 8.10.4`
4. `cabal update`
5. On Linux: install some C libraries from your Linux distribution (see note below)
6. `cabal install gf-3.11`
You can also download the source code release from [GitHub](https://github.com/GrammaticalFramework/gf-core/releases),
and follow the instructions below under **Installing from the latest developer source code**.
@@ -74,17 +76,6 @@ so you might want to add this directory to your path (in `.bash_profile` or simi
PATH=$HOME/.cabal/bin:$PATH
```
**Build tools**
In order to compile GF you need the build tools **Alex** and **Happy**.
These can be installed via Cabal, e.g.:
```
cabal install alex happy
```
or obtained by other means, depending on your OS.
**Haskeline**
GF uses [`haskeline`](http://hackage.haskell.org/package/haskeline), which