Allow the purescript dependencies to better match the available packages in
Guix.

--- purescript-0.13.8/purescript.cabal
+++ purescript-0.13.8/purescript.cabal.orig
@@ -1091 +1091 @@ library
-        Glob ==0.9.*,
+        Glob ==0.10.*,
@@ -1095 +1095 @@ library
-        ansi-terminal >=0.7.1 && <0.9,
+        ansi-terminal ==0.9.*,
@@ -1105 +1105 @@ library
-        clock <0.8,
+        clock ==0.8.*,
@@ -1173 +1173 @@ executable purs
-        Glob ==0.9.*,
+        Glob ==0.10.*,
@@ -1177 +1177 @@ executable purs
-        ansi-terminal >=0.7.1 && <0.9,
+        ansi-terminal ==0.9.*,
@@ -1188 +1188 @@ executable purs
-        clock <0.8,
+        clock ==0.8.*,
@@ -1209 +1209 @@ executable purs
-        network >=3.0.1.1 && <3.1,
+        network >=2.8 && <3.1,
@@ -1288 +1288 @@ test-suite tests
-        Glob ==0.9.*,
+        Glob ==0.10.*,
@@ -1293 +1293 @@ test-suite tests
-        ansi-terminal >=0.7.1 && <0.9,
+        ansi-terminal ==0.9.*,
@@ -1303 +1303 @@ test-suite tests
-        clock <0.8,
+        clock ==0.8.*,
@@ -1315,2 +1315,2 @@ test-suite tests
-        hspec <2.7,
-        hspec-discover <2.7,
+        hspec ==2.7.*,
+        hspec-discover ==2.7.*,