fix: cleaner version checking

Author: mgxd

nipype/interfaces/fsl/model.py

@@ -31,15 +31,6 @@
                     BaseInterfaceInputSpec)
 from .base import FSLCommand, FSLCommandInputSpec, Info
 
-FSVersion = "0"
-_ver = Info.version()
-if _ver:
-    if 'dev' in _ver:
-        FSVersion = _ver.rstrip().split('-')[-1] + '.dev'
-    else:
-        FSVersion = _ver.rstrip().split('-v')[-1]
-
-
 class Level1DesignInputSpec(BaseInterfaceInputSpec):
     interscan_interval = traits.Float(mandatory=True,
                                       desc='Interscan  interval (in secs)')
@@ -703,18 +694,15 @@ class FILMGLS(FSLCommand):
     """
 
     _cmd = 'film_gls'
-
+    input_spec = FILMGLSInputSpec
+    output_spec = FILMGLSOutputSpec
     if Info.version() and LooseVersion(Info.version()) > LooseVersion('5.0.6'):
         input_spec = FILMGLSInputSpec507
+        output_spec = FILMGLSOutputSpec507
     elif (Info.version() and
             LooseVersion(Info.version()) > LooseVersion('5.0.4')):
         input_spec = FILMGLSInputSpec505
-    else:
-        input_spec = FILMGLSInputSpec
-    if Info.version() and LooseVersion(Info.version()) > LooseVersion('5.0.6'):
-        output_spec = FILMGLSOutputSpec507
-    else:
-        output_spec = FILMGLSOutputSpec
+
 
     def _get_pe_files(self, cwd):
         files = None
@@ -1087,8 +1075,7 @@ class ContrastMgr(FSLCommand):
     same location. This has deprecated for FSL versions 5.0.7+ as the necessary
     corrections file is no longer generated by FILMGLS.
     """
-
-    if LooseVersion(FSVersion) >= LooseVersion("5.0.7"):
+    if Info.version() and LooseVersion(Info.version()) >= LooseVersion("5.0.7"):
         warn("ContrastMgr is deprecated in FSL 5.0.7+", DeprecationWarning)
     _cmd = 'contrast_mgr'
     input_spec = ContrastMgrInputSpec