removes dep:Mako; makes 'lark' a soft dependency

Author: kaushikcfd

.github/workflows/ci.yml

@@ -74,7 +74,7 @@ jobs:
                 # AK, 2020-12-13
                 rm pytools/log.py
 
-                EXTRA_INSTALL="numpy"
+                EXTRA_INSTALL="numpy lark-parser"
                 curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
                 . ./build-and-test-py-project.sh
 

.gitlab-ci.yml

@@ -7,7 +7,7 @@ Pytest:
     # AK, 2020-12-13
     rm pytools/log.py
 
-    export EXTRA_INSTALL="numpy"
+    export EXTRA_INSTALL="numpy lark-parser"
     curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
     . ./build-and-test-py-project.sh
   tags:

setup.py

@@ -42,10 +42,12 @@
           "appdirs>=1.4.0",
           "numpy>=1.6.0",
           "dataclasses>=0.7;python_version<='3.6'",
-          "Mako",
-          "lark-parser",
           ],
 
+      extras_require={
+          "tag_parsing": ["lark-parser"],
+          },
+
       package_data={"pytools": ["py.typed"]},
 
       author="Andreas Kloeckner",