Add Pkg2.installed(pkg) method

As a follow-up to JuliaLang#4022, add this convenience method to test if a particular package is installed.
mlubin · Aug 12, 2013 · d579dfb · d579dfb · StefanKarpinski · Aug 12, 2013
1 parent 8752713
commit d579dfb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/base/pkg2.jl b/base/pkg2.jl
@@ -43,6 +43,8 @@ function installed()
  return pkgs
 end
 
+installed(pkg) = get(installed(),pkg,nothing)
+
 status(io::IO=STDOUT) = Dir.cd() do
  reqs = Reqs.parse("REQUIRE")
  instd = Read.installed()