Make it possible to build independently.

Rather than expecting other packages to be checked out in particular
places, use source deps that specify the repo and tag that they come
from.

NB: This pins everything to `master`, but a specific commit or tag is
    likely to be more reliable.

cabal.project

@@ -1,3 +1,26 @@
+source-repository-package
+  type: git
+  location: https://github.com/ku-fpg/netlist.git
+  tag: master
+  subdir: netlist
+
+source-repository-package
+  type: git
+  location: https://github.com/ku-fpg/netlist.git
+  tag: master
+  subdir: netlist-to-verilog
+
+source-repository-package
+  type: git
+  location: https://github.com/ku-fpg/netlist.git
+  tag: master
+  subdir: verilog
+
+source-repository-package
+  type: git
+  location: https://github.com/expipiplus1/vector-sized.git
+  tag: master
+
 packages:
           ./inline/concat-inline.cabal
           ./plugin/concat-plugin.cabal
@@ -8,8 +31,4 @@ packages:
           ./hardware/concat-hardware.cabal
           ./graphics/concat-graphics.cabal
           ./examples/concat-examples.cabal
-          ./../netlist-kit-kufp/*/*.cabal
-          --- cloned from [email protected]:ku-fpg/netlist.git
-          ./../vector-sized/*.cabal
-          --- cloned from [email protected]:expipiplus1/vector-sized.git
 documentation: False