Fix bug in dependency graph creation

This fixes JuliaRegistries/General#49. I'm rather surprised that this had never came up before... (cherry picked from commit ae80eda, PR #1154)
JuliaLang · Apr 17, 2019 · b7d26be · b7d26be
1 parent 9c599ec
commit b7d26be
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/GraphType.jl b/src/GraphType.jl
@@ -287,7 +287,9 @@ mutable struct Graph
             end
             # The remaining dependencies do not have compatibility constraints
             for uuid in values(n2u)
-                get!(req, pdict[uuid]) do; VersionSpec() end
+                p1 = pdict[uuid]
+                p1 == p0 && continue
+                get!(req, p1) do; VersionSpec() end
             end
             # Translate the requirements into bit masks
             # Hot code, measure performance before changing