Hello,
I'd like to know how ghc-pkg searches package databases and how the
command-line flags affect the search.
My model of ghc-pkg was that it builds a list of package databases and then
searches them starting from the head. I'd like to work with a sandboxed local
package database. Looking at what ghc-pkg list prints, I can infer what
database list it's using:
ghc-pkg list: [user-db, global-db]
ghc-pkg list --global: [global-db]
ghc-pkg list --global --package-conf=$HOME/sandbox/package.conf.d: [sandbox-db,
global-db]
However, even though ghc-pkg doesn't show my user database, it still reports
broken packages that are in my user database. So ghc-pkg isn't really scanning
packages according to this database list. What is it doing?
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