No git install required

Using python-gitlab to find and point to wheel instead

install_wfm_stitching.py

@@ -11,7 +11,7 @@ You can install from the command line using the lauch_mantid_plot executable wit
 (execute and quit) option set, you can also pass a version to installation script, if not
 provided it will fetch the latest wfm_stitching package.
 
-Example:
+Example on windows:
 
 C:\\MantidInstall\\bin\\launch_mantidplot -x install_wfm_stitching.py
 
@@ -23,16 +23,40 @@ import subprocess
 from argparse import ArgumentParser
 import os
 import sys
+import re
 
-def do_wfm_stitching_install(python, required_version):
-    url = 'git+http://git.esss.dk/wedel/wfm_stitching.git'
+def extract_upload_url(python, required_version=None):
+    """ From gitlab project releases fetch the download url for the release matching the tag
+    """
+    try: 
+        import gitlab
+    except ImportError:
+        subprocess.check_call([python, '-m', 'pip', 'install', '--upgrade', '--user', 'python-gitlab'])
+        import gitlab
+        
+    gl = gitlab.Gitlab('https://git.esss.dk')
+    project = gl.projects.list(search='wfm_stitching')[0]
     if required_version:
-        url = '{0}@{1}'.format(url, required_version)
-    subprocess.check_call([python, '-m' 'pip', 'install', '--user', '--upgrade', url])
+        tag = project.tags.get('v{0}'.format(required_version))
+    else:
+        # Get the latest tag
+        tag = project.tags.list(order_by='updated', sort='desc')[0]
+    description = tag.attributes['release']['description']
+    # Search for mark-down style upload in the form [link-text](upload-url) and extract upload-url
+    upload = re.search('\[.*\]\((.*)\)', description).group(1)
+    # Join with the project web url to obtain the full address
+    upload_url = project.attributes['web_url'] + upload
+    return upload_url
+
+
+def do_wfm_stitching_install(python, required_version):
+    url = extract_upload_url(python, required_version)
+    subprocess.check_call([python, '-m', 'pip', 'install', '--user', '--upgrade', url])
 
 def do_wfm_stitching_uninstall(python):
     """Convenience function to allow the removal of the wfm-stitching package"""
-    subprocess.check_call([python, '-m' 'pip', 'uninstall', '-y', 'wfm-stitching'])
+    subprocess.check_call([python, '-m', 'pip', 'uninstall', '-y', 'wfm-stitching'])
+    subprocess.check_call([python, '-m', 'pip', 'uninstall', '-y', 'python-gitlab'])
 
 if __name__ == "__main__":
     parser = ArgumentParser(description='Install WFM package http://git.esss.dk/wedel/wfm_sitching')