Require type field when spec < 3.8 (haskell#8115)

+ Update file-format-changelog.rst

Cabal-syntax/src/Distribution/PackageDescription/FieldGrammar.hs

@@ -324,8 +324,8 @@ testSuiteFieldGrammar = TestSuiteStanza
     <*> monoidalFieldAla "code-generators"        (alaList'  CommaFSep Token)     testStanzaCodeGenerators
           ^^^ availableSince CabalSpecV3_8 []
 
-validateTestSuite :: Position -> TestSuiteStanza -> ParseResult TestSuite
-validateTestSuite pos stanza = case testSuiteType of
+validateTestSuite :: CabalSpecVersion -> Position -> TestSuiteStanza -> ParseResult TestSuite
+validateTestSuite cabalSpecVersion pos stanza = case testSuiteType of
     Nothing -> pure basicTestSuite
 
     Just tt@(TestTypeUnknown _ _) ->
@@ -357,9 +357,10 @@ validateTestSuite pos stanza = case testSuiteType of
                 { testInterface = TestSuiteLibV09 ver module_ }
 
   where
-    testSuiteType =
-        _testStanzaTestType stanza
-        <|> testTypeExe <$ _testStanzaMainIs stanza
+    testSuiteType = _testStanzaTestType stanza <|> do
+        guard (cabalSpecVersion >= CabalSpecV3_8)
+
+        testTypeExe <$ _testStanzaMainIs stanza
         <|> testTypeLib <$ _testStanzaTestModule stanza
 
     missingField name tt = "The '" ++ name ++ "' field is required for the "
@@ -446,8 +447,8 @@ benchmarkFieldGrammar = BenchmarkStanza
     <*> optionalField    "benchmark-module"            benchmarkStanzaBenchmarkModule
     <*> blurFieldGrammar benchmarkStanzaBuildInfo buildInfoFieldGrammar
 
-validateBenchmark :: Position -> BenchmarkStanza -> ParseResult Benchmark
-validateBenchmark pos stanza = case benchmarkStanzaType of
+validateBenchmark :: CabalSpecVersion -> Position -> BenchmarkStanza -> ParseResult Benchmark
+validateBenchmark cabalSpecVersion pos stanza = case benchmarkStanzaType of
     Nothing -> pure emptyBenchmark
         { benchmarkBuildInfo = _benchmarkStanzaBuildInfo stanza }
 
@@ -474,9 +475,10 @@ validateBenchmark pos stanza = case benchmarkStanzaType of
                 }
 
   where
-    benchmarkStanzaType =
-        _benchmarkStanzaBenchmarkType stanza
-        <|> benchmarkTypeExe <$ _benchmarkStanzaMainIs stanza
+    benchmarkStanzaType = _benchmarkStanzaBenchmarkType stanza <|> do
+        guard (cabalSpecVersion >= CabalSpecV3_8)
+
+        benchmarkTypeExe <$ _benchmarkStanzaMainIs stanza
 
     missingField name tt = "The '" ++ name ++ "' field is required for the "
                         ++ prettyShow tt ++ " benchmark type."

Cabal-syntax/src/Distribution/PackageDescription/Parsec.hs

@@ -314,13 +314,23 @@ goSections specVer = traverse_ process
             commonStanzas <- use stateCommonStanzas
             name'      <- parseUnqualComponentName pos args
             testStanza <- lift $ parseCondTree' testSuiteFieldGrammar (fromBuildInfo' name') commonStanzas fields
-            testSuite  <- lift $ traverse (validateTestSuite pos) testStanza
+            testSuite  <- lift $ traverse (validateTestSuite specVer pos) testStanza
 
             let hasType ts = testInterface ts /= testInterface mempty
             unless (onAllBranches hasType testSuite) $ lift $ parseFailure pos $ concat
                 [ "Test suite " ++ show (prettyShow name')
-                , " is missing required field \"main-is\" or the field "
-                , "is not present in all conditional branches."
+
+                , concat $ case specVer of
+                    v | v >= CabalSpecV3_8 ->
+                        [ " is missing required field \"main-is\" or the field "
+                        , "is not present in all conditional branches."
+                        ]
+                    _ ->
+                        [ " is missing required field \"type\" or the field "
+                        , "is not present in all conditional branches. The "
+                        , "available test types are: "
+                        , intercalate ", " (map prettyShow knownTestTypes)
+                        ]
                 ]
 
             -- TODO check duplicate name here?
@@ -330,13 +340,22 @@ goSections specVer = traverse_ process
             commonStanzas <- use stateCommonStanzas
             name'       <- parseUnqualComponentName pos args
             benchStanza <- lift $ parseCondTree' benchmarkFieldGrammar (fromBuildInfo' name') commonStanzas fields
-            bench       <- lift $ traverse (validateBenchmark pos) benchStanza
+            bench       <- lift $ traverse (validateBenchmark specVer pos) benchStanza
 
             let hasType ts = benchmarkInterface ts /= benchmarkInterface mempty
             unless (onAllBranches hasType bench) $ lift $ parseFailure pos $ concat
                 [ "Benchmark " ++ show (prettyShow name')
-                , " is missing required field \"main-is\" or the field "
-                , "is not present in all conditional branches."
+                , concat $ case specVer of
+                    v | v >= CabalSpecV3_8 ->
+                        [ " is missing required field \"main-is\" or the field "
+                        , "is not present in all conditional branches."
+                        ]
+                    _ ->
+                        [ " is missing required field \"type\" or the field "
+                        , "is not present in all conditional branches. The "
+                        , "available benchmark types are: "
+                        , intercalate ", " (map prettyShow knownBenchmarkTypes)
+                        ]
                 ]
 
             -- TODO check duplicate name here?

cabal-install/tests/IntegrationTests2/targets/benchmarks-disabled/p.cabal

@@ -1,7 +1,7 @@
+cabal-version: 3.8
 name: p
 version: 0.1
 build-type: Simple
-cabal-version: >= 1.10
 
 benchmark solver-disabled
   type: exitcode-stdio-1.0

cabal-install/tests/IntegrationTests2/targets/multiple-tests/p.cabal

@@ -1,7 +1,7 @@
+cabal-version: 3.8
 name: p
 version: 0.1
 build-type: Simple
-cabal-version: >= 1.10
 
 test-suite p1
   main-is:  P1.hs

cabal-install/tests/IntegrationTests2/targets/variety/p.cabal

@@ -1,7 +1,7 @@
+cabal-version: 3.8
 name: p
 version: 0.1
 build-type: Simple
-cabal-version: >= 1.10
 
 library
   exposed-modules: P

cabal-testsuite/PackageTests/DuplicateModuleName/DuplicateModuleName.cabal

@@ -1,10 +1,10 @@
+cabal-version:       3.8
 name:                DuplicateModuleName
 version:             0.1.0.0
-license:             BSD3
+license:             BSD-3-Clause
 author:              Edward Z. Yang
 maintainer:          [email protected]
 build-type:          Simple
-cabal-version:       >=1.10
 
 library
   exposed-modules:     Foo

cabal-testsuite/PackageTests/NewBuild/CmdBench/MultipleBenchmarks/MultipleBenchmarks.cabal

@@ -1,7 +1,7 @@
+cabal-version: 3.8
 name: MultipleBenchmarks
 version: 1.0
 build-type: Simple
-cabal-version: >= 1.10
 
 benchmark foo
     main-is: Foo.hs

changelog.d/pr-8115

@@ -4,7 +4,7 @@ prs: #8115
 issues: #7459
 description: {
 
-Allow the ommission of the `type` field in `test-suite` and `benchmark` stanzas
+Allow the omission of the `type` field in `test-suite` and `benchmark` stanzas
 when the type can be inferred by the presence of `main-is` or `test-module`.
 
 }

doc/file-format-changelog.rst

@@ -49,6 +49,8 @@ relative to the respective preceding *published* version.
   allowed of the form ``foo/**/literalFile``. Prior, double-star
   wildcards required the trailing filename itself be a wildcard.
 
+* Allow the omission of the `type` field in `test-suite` and `benchmark` stanzas
+  when the type can be inferred by the presence of `main-is` or `test-module`.
 
 ``cabal-version: 3.6``
 ----------------------