Probe from travis config.

ognibuild/buildsystem.py

@@ -79,6 +79,14 @@ class BuildSystem(object):
     def get_declared_outputs(self):
         raise NotImplementedError(self.get_declared_outputs)
 
+    @classmethod
+    def probe(cls, path):
+        return None
+
+    @classmethod
+    def probe_from_travis(cls, path, data):
+        return None
+
 
 class Pear(BuildSystem):
 
@@ -766,22 +774,19 @@ class Golang(BuildSystem):
 
     @classmethod
     def probe(cls, path):
-        if os.path.exists(os.path.join(path, ".travis.yml")):
-            import ruamel.yaml.reader
-
-            with open(os.path.join(path, ".travis.yml"), "rb") as f:
-                try:
-                    data = ruamel.yaml.load(f, ruamel.yaml.SafeLoader)
-                except ruamel.yaml.reader.ReaderError as e:
-                    warnings.warn("Unable to parse .travis.yml: %s" % (e,))
-                else:
-                    language = data.get("language")
-                    if language == "go":
-                        return Golang(path)
-
         for entry in os.scandir(path):
             if entry.name.endswith(".go"):
                 return Golang(path)
+            if entry.is_dir():
+                for entry in os.scandir(entry.path):
+                    if entry.name.endswith(".go"):
+                        return Golang(path)
+
+    @classmethod
+    def probe_from_travis(cls, path, data):
+        language = data.get("language")
+        if language == "go":
+            return cls(path)
 
 
 class Maven(BuildSystem):
@@ -871,15 +876,32 @@ class PerlBuildTiny(BuildSystem):
             return cls(path)
 
 
+BUILDSYSTEM_CLSES = [
+    Pear, SetupPy, Npm, Waf, Cargo, Meson, Cabal, Gradle, Maven,
+    DistInkt, Gem, Make, PerlBuildTiny, Golang]
+
+
 def detect_buildsystems(path, trust_package=False):
     """Detect build systems."""
-    for bs_cls in [
-            Pear, SetupPy, Npm, Waf, Cargo, Meson, Cabal, Gradle, Maven,
-            DistInkt, Gem, Make, PerlBuildTiny, Golang]:
+    for bs_cls in BUILDSYSTEM_CLSES:
         bs = bs_cls.probe(path)
         if bs is not None:
             yield bs
 
+    if os.path.exists(os.path.join(path, ".travis.yml")):
+        import ruamel.yaml.reader
+
+        with open(os.path.join(path, ".travis.yml"), "rb") as f:
+            try:
+                data = ruamel.yaml.load(f, ruamel.yaml.SafeLoader)
+            except ruamel.yaml.reader.ReaderError as e:
+                warnings.warn("Unable to parse .travis.yml: %s" % (e,))
+            else:
+                for bs_cls in BUILDSYSTEM_CLSES:
+                    bs = bs_cls.probe_from_travis(path, data)
+                    if bs is not None:
+                        yield bs
+
 
 def get_buildsystem(path, trust_package=False):
     for buildsystem in detect_buildsystems(path, trust_package=trust_package):