Add classifiers field to package metadata

CHANGES.md

@@ -175,6 +175,8 @@ To be released.
     Under the hood, all generated `import`s are now aliased with a name prefixed
     an underscore.
 
+ -  Added Python classifier metadata field.  [[#100], [#269]]
+
 ### Et cetera
 
  -  The officially distributed executable binaries for Linux became
@@ -184,6 +186,7 @@ To be released.
     March 2018.
 
 [#13]: https://github.com/spoqa/nirum/issues/13
+[#100]: https://github.com/spoqa/nirum/issues/100
 [#217]: https://github.com/spoqa/nirum/issues/217
 [#220]: https://github.com/spoqa/nirum/issues/220
 [#227]: https://github.com/spoqa/nirum/pull/227
@@ -193,6 +196,7 @@ To be released.
 [#257]: https://github.com/spoqa/nirum/pull/257
 [#258]: https://github.com/spoqa/nirum/pull/258
 [#259]: https://github.com/spoqa/nirum/pull/259
+[#269]: https://github.com/spoqa/nirum/pull/269
 [entry points]: https://setuptools.readthedocs.io/en/latest/pkg_resources.html#entry-points
 [python2-numbers-integral]: https://docs.python.org/2/library/numbers.html#numbers.Integral
 [python2-int]: https://docs.python.org/2/library/functions.html#int

docs/package.md

@@ -97,6 +97,18 @@ of the package to be generated by Nirum, hence `name`:
 
     [targets.python]
     name = "py-foobar"  # will be submitted to: pypi.python.org/pypi/py-foobar
+    minimum_runtime = "0.3.9"
+    classifiers = [
+        "Development Status :: 3 - Alpha",
+        "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)"
+    ]
+
+There are two optional fields, `minimum_runtime` and `classifiers`.
+`minimum_runtime` is a version of [nirum-python][] that
+is required by generated python package. `classifiers` contains a list of
+classifier which is listed on [classifier list][pypi-classifier-list].
+
+[pypi-classifier-list]: https://pypi.org/pypi?%3Aaction=list_classifiers
 
 
 Text encoding

examples/package.toml

@@ -3,6 +3,10 @@ version = "0.3.0"
 [targets.python]
 name = "nirum-examples"
 minimum_runtime = "0.3.9"
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)"
+]
 
 [targets.docs]
 title = "Nirum Examples"

src/Nirum/Package/Metadata.hs

@@ -3,11 +3,11 @@
 module Nirum.Package.Metadata ( Author (Author, email, name, uri)
                               , Metadata ( Metadata
                                          , authors
-                                         , target
-                                         , version
                                          , description
-                                         , license
                                          , keywords
+                                         , license
+                                         , target
+                                         , version
                                          )
                               , MetadataError ( FieldError
                                               , FieldTypeError
@@ -47,6 +47,7 @@ module Nirum.Package.Metadata ( Author (Author, email, name, uri)
                               , readMetadata
                               , stringField
                               , tableField
+                              , textArrayField
                               , versionField
                               ) where
 

src/Nirum/Targets/Python.hs

@@ -66,10 +66,10 @@ import Nirum.Docs.ReStructuredText (ReStructuredText, render)
 import Nirum.Package hiding (target)
 import Nirum.Package.Metadata ( Author (Author, name, email)
                               , Metadata ( authors
-                                         , target
-                                         , version
                                          , description
                                          , license
+                                         , target
+                                         , version
                                          )
                               , MetadataError ( FieldError
                                               , FieldTypeError
@@ -86,6 +86,7 @@ import Nirum.Package.Metadata ( Author (Author, name, email)
                                        )
                               , stringField
                               , tableField
+                              , textArrayField
                               , versionField
                               )
 import qualified Nirum.Package.ModuleSet as MS
@@ -1319,6 +1320,7 @@ compilePackageMetadata Package
                                  , target = target'@Python
                                        { packageName = packageName'
                                        , minimumRuntimeVersion = minRuntimeVer
+                                       , classifiers = classifiers'
                                        }
                                  }
                            , modules = modules'
@@ -1384,13 +1386,18 @@ SOURCE_ROOT = #{stringLiteral $ sourceDirectory Python3}
 if sys.version_info < (3, 0):
     SOURCE_ROOT = #{stringLiteral $ sourceDirectory Python2}
 
-# TODO: long_description, url, classifiers
+# TODO: long_description, url
 setup(
     name=#{stringLiteral packageName'},
     version=#{stringLiteral $ SV.toText version'},
     description=#{nStringLiteral description'},
     license=#{nStringLiteral license'},
     keywords=#{stringLiteral $ T.intercalate " " keywords'},
+    classifiers=[
+%{ forall classifier <- classifiers' }
+    #{stringLiteral classifier},
+%{ endforall }
+    ],
     author=', '.join([
 %{ forall Author { name = name } <- authors' }
     (#{stringLiteral name}),
@@ -1529,9 +1536,14 @@ instance Target Python where
                                              MD.fieldType v
             | (k, v) <- HM.toList renameTable
             ]
+        classifiers' <- case textArrayField "classifiers" table of
+            Right t -> Right t
+            Left (FieldError _) -> Right []
+            otherwise' -> otherwise'
         return Python { packageName = name'
                       , minimumRuntimeVersion = max minRuntime minimumRuntime
                       , renames = M.fromList renamePairs
+                      , classifiers = classifiers'
                       }
     compilePackage = compilePackage'
     showCompileError _ e = e

src/Nirum/Targets/Python/CodeGen.hs

@@ -68,6 +68,7 @@ type RenameMap = Map ModulePath ModulePath
 data Python = Python { packageName :: Text
                      , minimumRuntimeVersion :: Version
                      , renames :: RenameMap
+                     , classifiers :: [Text]
                      } deriving (Eq, Ord, Show, Typeable)
 
 data PythonVersion = Python2

test/Nirum/Package/MetadataSpec.hs

@@ -40,6 +40,7 @@ import Nirum.Package.Metadata ( Metadata (Metadata, version)
                               , readFromPackage
                               , readMetadata
                               , stringField
+                              , textArrayField
                               , versionField
                               )
 
@@ -250,6 +251,16 @@ spec =
             fieldType (get "t1") `shouldBe` "table of an item"
             fieldType (get "t2") `shouldBe` "table of 2 items"
             fieldType (get "ta") `shouldBe` "array of 2 tables"
+        specify "textArrayField" $ do
+            let Right table = parseTomlDoc "<string>"
+                    [q|ta = []
+                       sa = ["a", "b", "c"]
+                       i = 1|]
+            textArrayField "ta" table `shouldBe` Right []
+            textArrayField "sa" table `shouldBe` Right ["a", "b", "c"]
+            textArrayField "i" table `shouldBe` Left (FieldTypeError
+                "i" "array" "integer (1)")
+
   where
     parse :: Text -> Either MetadataError (Metadata DummyTarget)
     parse = parseMetadata "<string>"

test/Nirum/PackageSpec.hs

@@ -4,6 +4,7 @@ module Nirum.PackageSpec where
 
 import Data.Either (isLeft, isRight)
 import Data.Proxy (Proxy (Proxy))
+import Data.Text
 import System.IO.Error (isDoesNotExistError)
 
 import qualified Data.SemVer as SV
@@ -53,8 +54,15 @@ createValidPackage t = createPackage Metadata { version = SV.initial
 
 spec :: Spec
 spec = do
-    testPackage (Python "nirum-examples" minimumRuntime [])
+    testPackage (Python "nirum-examples" minimumRuntime [] classifiers')
     testPackage DummyTarget
+  where
+    classifiers' :: [Text]
+    classifiers' =
+        [ "Development Status :: 3 - Alpha"
+        , append "License :: OSI Approved :: "
+                 "GNU General Public License v3 or later (GPLv3+)"
+        ]
 
 testPackage :: forall t . Target t => t -> Spec
 testPackage target' = do

test/Nirum/Targets/Python/CodeGenSpec.hs

@@ -48,7 +48,7 @@ makeDummySource' pathPrefix m renames =
         , description = Just "Package description"
         , license = Just "MIT"
         , Nirum.Package.Metadata.keywords = ["sample", "example", "nirum"]
-        , target = Python "sample-package" minimumRuntime renames
+        , target = Python "sample-package" minimumRuntime renames ["classifier"]
         }
     pkg :: Package Python
     pkg = createPackage

test/Nirum/TypeInstance/BoundModuleSpec.hs

@@ -21,7 +21,7 @@ import Nirum.TypeInstance.BoundModule
 
 spec :: Spec
 spec = do
-    testPackage (Python "nirum-examples" minimumRuntime [])
+    testPackage (Python "nirum-examples" minimumRuntime [] [])
     testPackage DummyTarget
 
 testPackage :: forall t . Target t => t -> Spec

test/nirum_fixture/package.toml

@@ -9,6 +9,10 @@ email = "[email protected]"
 
 [targets.python]
 name = "nirum_fixture"
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)"
+]
 [targets.python.renames]
 "renames.test" = "renamed"
 

test/python/setup_test.py

@@ -28,6 +28,12 @@ def test_setup_metadata():
     assert ['0.3.0'] == pkg['Version']
     assert ['Package description'] == pkg['Summary']
     assert ['MIT'] == pkg['License']
+    expected = [
+        "Development Status :: 3 - Alpha",
+        "License :: OSI Approved :: "
+        "GNU General Public License v3 or later (GPLv3+)",
+    ]
+    assert expected == pkg['Classifier']
 
 
 def test_module_entry_points():