Merge pull request #1168 from msarahan/long_prefix

always use long prefix

conda_build/config.py

@@ -94,11 +94,7 @@ def _get_lua(self, prefix):
 
     @property
     def build_prefix(self):
-        if self.use_long_build_prefix is None:
-            raise Exception("I don't know which build prefix to use yet")
-        if self.use_long_build_prefix:
-            return self.long_build_prefix
-        return self.short_build_prefix
+        return self.long_build_prefix
 
     @property
     def build_python(self):

conda_build/windows.py

@@ -212,7 +212,7 @@ def build(m, bld_bat, dirty=False, activate=True):
             fo.write("set LIB={};%LIB%\n".format(env["LIBRARY_LIB"]))
             fo.write(msvc_env_cmd(bits=cc.bits, override=m.get_value('build/msvc_compiler', None)))
             if activate:
-                fo.write("call activate.bat _build\n")
+                fo.write("call activate.bat {0}\n".format(config.build_prefix))
             fo.write("REM ===== end generated header =====\n")
             fo.write(data)
 

tests/test_build.py

@@ -27,6 +27,8 @@ def test_find_prefix_files():
     """
     # create a temporary folder
     prefix = os.path.join(sys.prefix, "envs", "_build")
+    # duplicate long build prefix
+    prefix = max(prefix, (prefix + 8 * '_placehold')[:80])
     if not os.path.isdir(prefix):
         os.makedirs(prefix)
     with TemporaryDirectory(prefix=prefix + os.path.sep) as tmpdir: