Correctly extract platform from the dependency.

If the `dep` is a two char string (as "qt"), the `platform, name = dep`
will split the string and search for 't' dependency in 'q' platform.

So, we have to be sure that the dep is a tuple before splitting it.

kiwixbuild/_global.py

@@ -22,9 +22,9 @@ def add_target_step(key, what):
     _target_steps[key] = what
 
 def get_target_step(key, default_context=None):
-    try:
+    if isinstance(key, tuple):
         context, target = key
-    except ValueError:
+    else:
         context, target = default_context, key
     return _target_steps[(context, target)]
 

kiwixbuild/builder.py

@@ -68,9 +68,9 @@ class Builder:
 
         targetPlatform = PlatformInfo.get_platform(targetPlatformName)
         for dep in target.get_dependencies(targetPlatform, True):
-            try:
+            if isinstance(dep, tuple):
                 depPlatform, depName = dep
-            except ValueError:
+            else:
                 depPlatform, depName = targetPlatformName, dep
             if (depPlatform, depName) in targets:
                 yield from self.order_dependencies((depPlatform, depName), targets)

kiwixbuild/platforms/base.py

@@ -57,9 +57,9 @@ class PlatformInfo(metaclass=_MetaPlatform):
         targets[('source', targetName)] = targetClass.Source
         targets[(self.name, targetName)] = targetClass.Builder
         for dep in targetClass.Builder.get_dependencies(self, False):
-            try:
+            if isinstance(dep, tuple):
                 depPlatformName, depName = dep
-            except ValueError:
+            else:
                 depPlatformName, depName = self.name, dep
             depPlatform = self.get_platform(depPlatformName, targets)
             depPlatform.add_targets(depName, targets)