Failure to install pandoc-cli from cabal

[chelgrian]

As of 1st of September 2023 on a fully up to date Ubuntu 22.04 I tried to do:

cabal update
cabal install pandoc-cli

This attempted to install pandoc 3.1.2 (rather than 3.1.7 which seems to be the latest today) however it failed with the following error

src/Text/Pandoc/Lua/Init.hs:29:29: error:
Module
‘Text.Pandoc.Logging’
does not export
‘LogMessage(ScriptingWarning)’
|
29 | import Text.Pandoc.Logging (LogMessage (ScriptingWarning))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (edited)

[jgm]

That's weird. When I try this I get:

Build profile: -w ghc-9.4.4 -O1
In order, the following will be built (use -v for more details):
 - blaze-builder-0.4.2.3 (lib) (requires download & build)
 - unicode-collation-0.1.3.5 (lib) (requires download & build)
 - http-client-0.7.14 (lib) (requires build)
 - blaze-markup-0.8.2.8 (lib) (requires build)
 - http-client-tls-0.3.6.3 (lib) (requires build)
 - blaze-html-0.9.1.2 (lib) (requires build)
 - xml-conduit-1.9.1.3 (lib:xml-conduit) (requires build)
 - wai-app-static-3.1.7.4 (lib) (requires build)
 - typst-0.3.2.0 (lib) (requires build)
 - skylighting-core-0.14 (lib) (requires download & build)
 - pandoc-3.1.7 (lib:xml-light) (requires download & build)
 - citeproc-0.8.1 (lib) (requires build)
 - servant-server-0.20 (lib) (requires build)
 - skylighting-format-ansi-0.1 (lib) (requires build)
 - skylighting-format-latex-0.1 (lib) (requires build)
 - skylighting-format-context-0.1.0.2 (lib) (requires build)
 - skylighting-format-blaze-html-0.1.1.1 (lib) (requires download & build)
 - skylighting-0.14 (lib) (requires download & build)
 - pandoc-3.1.7 (lib) (requires download & build)
 - pandoc-server-0.1.0.3 (lib) (requires download & build)
 - pandoc-lua-engine-0.2.1.2 (lib) (requires download & build)
 - pandoc-cli-0.1.1.1 (exe:pandoc) (requires download & build)

Try cabal clean first. And also try adding --constraint 'pandoc == 3.1.7.

[jgm]

Looks like pandoc-lua-engine should bump its lower bound for pandoc, as well.

[chelgrian]

So the obvious difference is that Ubuntu 22.04 LTS has GHC 8.8.4. If I try a constrained install then I get

$ cabal install pandoc-cli --constraint "pandoc == 3.1.7"
--minimize-conflict-set
Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: pandoc-cli-0.1.1.1 (user goal)
[__1] trying: pandoc-3.1.7 (dependency of pandoc-cli)
[__2] trying: typst-0.3.2.0 (dependency of pandoc)
[__3] next goal: base (dependency of pandoc-cli)
[__3] rejecting: base-4.13.0.0/installed-4.1... (conflict: typst =>
base>=4.14
&& <=5)
[__3] rejecting: base-4.18.0.0, base-4.17.2.0, base-4.17.1.0, base-4.17.0.0,
base-4.16.4.0, base-4.16.3.0, base-4.16.2.0, base-4.16.1.0, base-4.16.0.0,
base-4.15.1.0, base-4.15.0.0, base-4.14.3.0, base-4.14.2.0, base-4.14.1.0,
base-4.14.0.0, base-4.13.0.0, base-4.12.0.0, base-4.11.1.0, base-4.11.0.0,
base-4.10.1.0, base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0,
base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0,
base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0,
base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1,
base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1
(constraint from non-upgradeable package requires installed instance)
[__3] fail (backjumping, conflict set: base, pandoc-cli, typst)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: pandoc, base, typst, pandoc-cli

[jgm]

Recent versions of pandoc require ghc >= 8.10. (I've just updated tested-with to reflect that.)

[jgm]

Some of our dependencies might require more recent versions that that.