[jhbuild/desrt/master: 4/13] scripts: add a debian-mkequivs script

[Ryan Lortie <desrt src gnome org>]

commit 507908f0ae4b68f957ab676e884c3eedb71e32c1
Author: Ryan Lortie <desrt desrt ca>
Date:   Mon Jan 19 09:16:36 2015 -0500

    scripts: add a debian-mkequivs script
    
    Add a neat hack to generate a .deb file that depends on sysdeps of
    jhbuild. This has at least two uses:
    
     - generating a package that people can download and install with gdebi
       in order to get all build dependencies satisfied
    
     - generating a package that can be marked as a keeper in debfoster to
       keep a large number of jhbuild-required dependencies installed
       without too much additional noise
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742251

 scripts/debian-mkequivs.py |   48 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 48 insertions(+), 0 deletions(-)
---
diff --git a/scripts/debian-mkequivs.py b/scripts/debian-mkequivs.py
new file mode 100755
index 0000000..b533cf4
--- /dev/null
+++ b/scripts/debian-mkequivs.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python2
+
+from email.utils import formataddr
+import email.generator
+import email.message
+import subprocess
+import sys
+import ast
+
+if len(sys.argv) != 3:
+    print "error: must give a sysid and Debian package name to create"
+    print "example:\n\n   ./debian-mkequivs.py debian-8 jhbuild-sysdeps"
+    sys.exit(1)
+
+myid = sys.argv[1]
+
+debian_sysdeps = ast.literal_eval(open('../data/debian-sysdeps.py').read())
+
+if not myid in debian_sysdeps:
+    print "error: don't know about a release called '{}'".format(myid)
+    sys.exit(1)
+
+package_list = dict(debian_sysdeps[myid])
+package_list.update(debian_sysdeps['common'])
+depends = []
+
+for line in sys.stdin:
+    dep = line.strip()
+
+    if dep in package_list:
+        depends.append(' | '.join (pkg.split('/')[-1] for pkg in package_list[dep]))
+    else:
+        print "warning: don't know how to satisfy '{}'".format(dep)
+
+
+control = email.message.Message()
+control['Package'] = sys.argv[2]
+control['Depends'] = ', '.join (depends)
+try:
+    control['Maintainer'] = formataddr((subprocess.check_output(['git', 'config', 'user.name']).strip(),
+                                        subprocess.check_output(['git', 'config', 'user.email']).strip()))
+except: pass
+control['Description'] = 'jhbuild dependencies meta-package\nSee https://wiki.gnome.org/HowDoI/Jhbuild for 
more info'
+control['Readme'] = '/dev/null'
+equivs = subprocess.Popen(['equivs-build', '-'], stdin = subprocess.PIPE)
+email.generator.Generator(equivs.stdin).flatten(control)
+equivs.stdin.close()
+equivs.wait()