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The basic idea is: * The `InstalledLibraryInfo` constructor is modified so that the `GhcPkgId` of a main library is optional. * A `ConfigCacheTypeFlagLibrary` value is, like a `ConfigCacheTypeFlagExecutable` value, based on the package identifier (rather than the 'GhcPkgId' of the main library, which may not be present) * `Stack.SDist` needs to be considered more carefully. * `fetchAndMarkInstalledPackage` allows for the absence of a buildable main library but the presence of sublibraries. An integration test is added.
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This pull request is experimental, to see if the CI is passed. Even if it passes, it may not be a good thing for Stack to accept something that Cabal (the tool) does not accept: in one sense, the Cabal package description format is specified by what Cabal (the tool) in fact does (notwithstanding that the specification is purportedly documented).
The basic idea is:
The
InstalledLibraryInfoconstructor is modified so that theGhcPkgIdof a main library is optional.A
ConfigCacheTypeFlagLibraryvalue is, like aConfigCacheTypeFlagExecutablevalue, based on the package identifier (rather than the 'GhcPkgId' of the main library, which may not be present)Stack.SDistneeds to be considered more carefully.fetchAndMarkInstalledPackageallows for the absence of a buildable main library but the presence of sublibraries.An integration test is added.
Please also shortly describe how you tested your change. Bonus points for added tests!