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doc/bugs/No_viable_build_plan_for_ghc_9.2.2.mdwn
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### Please describe the problem.
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Some dependencies of `git-annex` don't have viable releases for ghc-9.2.2 (aws, bloomfilter).
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```
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cabal v2-build
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Resolving dependencies...
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cabal: Could not resolve dependencies:
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[__0] trying: bloomfilter-2.0.1.0 (user goal)
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[__1] trying: deepseq-1.4.6.1/installed-1.4.6.1 (dependency of bloomfilter)
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[__2] trying: bytestring-0.11.3.0/installed-0.11.3.0 (dependency of
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bloomfilter)
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[__3] trying: base-4.16.1.0/installed-4.16.1.0 (dependency of bloomfilter)
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[__4] trying: git-annex-10.20220322 (user goal)
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[__5] trying: uuid-1.3.15 (dependency of git-annex)
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[__6] trying: time-1.11.1.1/installed-1.11.1.1 (dependency of git-annex)
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[__7] trying: aws-0.22 (dependency of git-annex)
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[__8] next goal: aeson (dependency of git-annex)
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[__8] rejecting: aeson-2.0.3.0 (conflict: aws => aeson>=0.6 && <1.6)
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[__8] skipping: aeson-2.0.2.0, aeson-2.0.1.0, aeson-2.0.0.0 (has the same
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characteristics that caused the previous version to fail: excluded by
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constraint '>=0.6 && <1.6' from 'aws')
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...
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```
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### What steps will reproduce the problem?
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`cabal v2-build [--allow-newer]`
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### What version of git-annex are you using? On what operating system?
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I checked out HEAD as of `b25bfecb1`. Building it on OpenBSD with ghc-9.2.2.
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### Please provide any additional information below.
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Building with `--allow-newer` first points at `bloomfilter` which is a [known problem with a patch](https://github.com/bos/bloomfilter/pull/20). The next problem is with `aws` and this appears to [also be a known issue](https://github.com/aristidb/aws/issues/275) which also [has a patch](https://github.com/aristidb/aws/pull/277).
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### Have you had any luck using git-annex before?
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Yes, very much so. It works great as an OpenBSD port when built with ghc-8.10.6.
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### Minor fix is required to git-annex
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Once I apply this little fix to `git-annex` and the two patches referenced above, the code type-checks.
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```patch
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diff --git a/Types/Export.hs b/Types/Export.hs
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index a5cb173e5..2d5419b91 100644
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--- a/Types/Export.hs
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+++ b/Types/Export.hs
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@@ -21,7 +21,7 @@ import Git.FilePath
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import Utility.Split
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import Utility.FileSystemEncoding
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-import Data.ByteString.Short as S
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+import qualified Data.ByteString.Short as S
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import qualified System.FilePath.Posix as Posix
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import GHC.Generics
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import Control.DeepSeq
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```
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I also see all but one tests pass, but I'm pretty sure the same test used to fail with the older compiler:
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```
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Tests
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Tasty
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tasty self-check: OK
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+++ OK, passed 1 test.
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Repo Tests v8 locked
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Init Tests
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init: OK (0.77s)
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add: OK (2.71s)
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rsync remote: FAIL (3.58s)
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./Test/Framework.hs:328:
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able to modify annexed file's foo content
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Use -p '/rsync remote/' to rerun this test only.
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conflict resolution (adjusted branch): OK (16.26s)
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conversion annexed to git: OK (3.32s)
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move (ssh remote): OK (6.11s)
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export_import: OK (13.23s)
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1 out of 8 tests failed (46.00s)
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```
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