union-find fails to compile

[mihaimaruseac]

Preprocessing library for union-find-0.2..                                                                                                                                   
Building library for union-find-0.2..                                                                                                                                        
[4 of 4] Compiling Data.UnionFind.ST                                                                                                                                         
                                                                                                                                                                             
/var/stackage/work/unpack-dir/unpacked/union-find-0.2-82e626d09f57a29271bed56a1572b845497635a929dbaf0a923280339bd91bd7/src/Data/UnionFind/ST.hs:133:5: error:                
    • No instance for (MonadFail (ST s))                                                                                                                                     
        arising from a do statement                                                                                                                                          
        with the failable pattern ‘Info info_ref1’                                                                                                                           
    • In a stmt of a 'do' block: Info info_ref1 <- readSTRef link_ref1                                                                                                       
      In the second argument of ‘($)’, namely                                                                                                                                        ‘do Info info_ref1 <- readSTRef link_ref1                                                                                                                            
            Info info_ref2 <- readSTRef link_ref2                                                                                                                            
            MkInfo w1 d1 <- readSTRef info_ref1                                                                                                                              
            MkInfo w2 d2 <- readSTRef info_ref2                                                                                                                              
            ....’                                                                                                                                                            
      In a stmt of a 'do' block:
        when (point1 /= point2)
          $ do Info info_ref1 <- readSTRef link_ref1
               Info info_ref2 <- readSTRef link_ref2
               MkInfo w1 d1 <- readSTRef info_ref1
               MkInfo w2 d2 <- readSTRef info_ref2
               ....
    |
133 |     Info info_ref1 <- readSTRef link_ref1
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[andreasabel]

Lifted issue to the (likely unresponsive) maintainer:

• union-find-0.2 does not build with GHC 9.4 nominolo/union-find#14

[alaendle]

Closed since no reference to this issue can be found in the buildconstraints file; the issue is reported in the package repository & union-find will get re-enabled by commenter if a compatible release appears on hackage - so really no need to track this issue here on stackage explicitly.