packages affected by inaccurate conduit related bounds

[hvr]

• https://matrix.hackage.haskell.org/package/hoogle (c.f. Compilation error when installing using cabal ndmitchell/hoogle#234)

[ndmitchell]

I've manually revised Hoogle 5.. Happy to revise Hoogle 4. if anyone wants and can give me the error (my guess is the matrix builder will do so shortly).

As a matter of course, perhaps you should @ndmitchell when raising issues about my packages, and similarly for everyone else? Otherwise there's a non-zero chance I would have missed this.

[RyanGlScott]

Perhaps snoyberg/conduit#353 also falls under this?

I've worked around this manually in haskell/criterion@bd5898b by adding a resourcet >= 1.1.11 bound. I'm not sure when what versions of resourcet that conduit-1.2.13 doesn't build with, but I do know that:

• It's broken with resourcet-1.1.3.3
• It works with resourcet-1.1.11

[ndmitchell]

@RyanGlScott - it's also not clear why Cabal deliberately picks quite an old version of resourcet. Is there something weird that's causing it to go there?

[hvr]

@ndmitchell Most likely because it tries to optimise for the freshness of some other package (I suspect for exception-0.9), which forces it to compromise on resourcet; in general this isn't an optimization problem with a clear optimal solution / criteria to optimise for. And this wouldn't be a problem anyway if conduit's dependency specification had accurate lower bounds.

[phadej]

http://hackage.haskell.org/package/resourcet-1.1.3.3 is the last version not depending on transformers-compat. Every other newer resourcet-1.1 version depends on transformers-compat <0.6 (or <0.5).

Solver choses that it's better to pick transformers-compat-0.6 than resourcet-1.1.11 for install plan.

diff between non-restricted, and --constraint=resourcet>=1.1.11 plans. One could say these install plans aren't comparable (in partial order sense), cannot say which one is "better".

--- first.txt	2018-02-26 21:35:03.100530713 +0200
+++ second.txt	2018-02-26 21:35:32.128872790 +0200
@@ -32,7 +32,8 @@
 js-flot-0.8.3
 critbit-0.2.0.0
 conduit-1.2.13
-resourcet-1.1.3.3
+resourcet-1.1.11
+unliftio-core-0.1.1.0
 mmorph-1.1.1
 lifted-base-0.2.3.11
 monad-control-1.0.2.3
@@ -75,8 +76,7 @@
 semigroups-0.18.4
 unordered-containers-0.2.9.0
 tagged-0.8.5
-transformers-compat-0.6.0.4
-generic-deriving-1.12.1
+transformers-compat-0.5.1.4
 transformers-0.4.2.0
 template-haskell-2.10.0.0
 pretty-1.1.2.0

[andreasabel]

The OP seems fixed and the issue has been inactive for > 3 years.
Closing. Welcome to reopen with a TODO list if there is interest.