Installation issues

[mcdejonge]

Hi,

Cool tool!

I did have some issues installing on OS X + Homebrew, though:

• cabal install erd does not work at all
• Installing manually fails as well:
  • base is set to be larger than 4.5, but the current version is 4.11 which for some reason is not seen as being larger than 4.5 (probably a cabal issue?). Workaround: set base >= 4.1
  • graphviz is not installed automatically, so you need to manually do cabal install graphviz

Once you've done this, however, building and running erd works fine.

I suspect both of these are cabal issues and not so much erd issues, but it might be nice to mention them in the installation instructions.

[rgoubet]

Hi,

I'm trying to run erd, but have no knowledge whatsoever about Haskell and cabal. For your workaround on the first issue, how do you set base >= 4.1 ?

Thanks!

[mcdejonge]

You can do this in the cabal file in the source directory (erd.cabal)

[mmzx]

Please let us know whether installation with cabal succeeds as mentioned in #27 .
The command would be cabal install --allow-newer erd.
Alternatively, you may use stack, the configuration has just been added.

[zhujinxuan]

Hi, I think it is due to, when @BurntSushi publishing the package last time, the cabal file is base == 4.7.* (http://hackage.haskell.org/package/erd-0.1.3.0/src/erd.cabal)

Hi, @BurntSushi, can you republish with current cabal? (where base is an range)

As a temporary solution, cabal install --allow-newer erd.

[mmzx]

In order to publish erd on hackage the version has to be increased ( #52 ). Once the PRs are all reviewed would be nice to do this.

[mmzx]

However, the request in this ticket: increasing version of base, has already been done.