Commits on Aug 10, 2018

1. Reexported modules, take 3 …

   In #385, we claimed to exploit the fact that GHC only needs package
   names in reexport declarations to obviate the need for knowing the
   versions (and dependency hashes) of all prebuilt packages. We provided
   a test to substantiate this indeed works. But it turns that the test
   was not a good test.
   
   The test was flawed because it featured libraries reexporting `base`.
   It turns out that `base` (along with `rts`) are magical in GHC.
   Because they are so-called "wired-in packages", they are assumed
   unique and are therefore not located using a version number. So while
   the scheme in #385 worked for `base`, it didn't work in the general
   case, as observed by @lunaris.
   
   The fix consists qualifying all package reexports with full package
   id's, not package names. How do we derive a package id given only
   a package name? The solution is to have the toolchain generate a dump
   of the global package database that ships with the compiler. This is
   only needed once for the entire workspace. From this dump, we can
   lookup the full package id given any particular name.
   
   Fixes #357.

   

   mboes committed Aug 10, 2018
   Configuration menu

   • View commit details
   • Copy full SHA for 20611b5
   • Browse repository at this point

   Copy the full SHA

   20611b5 View commit details

   Browse the repository at this point in the history