testsuite: Be explicit about runtime test dependencies #9439
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We tend to make a bit of ceremony when applying delay_passed, for transparency and mutual trust and to make sure newcomers don't see old PRs and try to emulate our crooked ways. IMHO in this case emergency merge is justified and, by writing this, I hope I fulfilled the ritual. ;) Still time to object and remove the label, though, while the PR is in the queue (and will probably get rebased again). |
Issue haskell#8356 reports occasional errors from running the testsuite about multiple package versions available. This stems from the invokation of `runghc` not being explicit about all dependencies of the testsuite. The solution is provide a component in the cabal file which is explicit about which packages the tests can depend on. This component has a build-depends section which lists all the dependencies that the tests require. It would be better if this component was a library component but we can't do this with a Custom setup because of limitations to do with per-component builds. Then we also enable `-hide-all-packages`, so the dependency will not be available if it is not explicitly listed as a dependency. You could also imagine a future where the Setup.hs script found the test files and compiled a single executable which would run all the tests, rather than invoking runghc on each one individually. Fixes haskell#8356
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Issue #8356 reports occasional errors from running the testsuite about multiple package versions available. This stems from the invokation of
runghcnot being explicit about all dependencies of the testsuite.The solution is provide a component in the cabal file which is explicit about which packages the tests can depend on. This component has a build-depends section which lists all the dependencies that the tests require.
It would be better if this component was a library component but we can't do this with a Custom setup because of limitations to do with per-component builds.
Then we also enable
-hide-all-packages, so the dependency will not be available if it is not explicitly listed as a dependency.You could also imagine a future where the Setup.hs script found the test files and compiled a single executable which would run all the tests, rather than invoking runghc on each one individually.
Fixes #8356