| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Summary:
This commit reimplements shadowing on package databases by doing
the shadowing calculation on a per-database basis: specifically,
if a later package database shadows a package from the earlier
databases, we first remove that package (and its transitive
dependencies) before merging the databases together.
This should also fix bootstrapping GHC HEAD with HEAD.
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Test Plan: validate
Reviewers: ggreif, bgamari, austin
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1385
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
This commit contains a Cabal submodule update which unifies installed
package IDs and package keys under a single notion, a Component ID.
We update GHC to keep follow this unification. However, this commit
does NOT rename installed package ID to component ID and package key to
unit ID; the plan is to do that in a companion commit.
- Compiler info now has "Requires unified installed package IDs"
- 'exposed' is now expected to contain unit keys, not IPIDs.
- Shadowing is no more. We now just have a very simple strategy
to deal with duplicate unit keys in combined package databases:
if their ABIs are the same, use the latest one; otherwise error.
Package databases maintain the invariant that there can only
be one entry of a unit ID.
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Test Plan: validate
Reviewers: simonpj, austin, bgamari, hvr, goldfire
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1184
GHC Trac Issues: #10714
|
