Add "--extra-pkgs-from" ("-X") option to osc build.

This option adds extra packages listed in the specified file to build.

For now, osc does not support automatic buildrequires.

When a package has automatic buildrequires, osc just
returns error code 9 that is returned by build,
but build leaves a list of missing dependencies in
".build.packages/OTHER/_generated_buildreqs" file inside build root.

These extra packages can be added using "--extra-pkgs" ("-x") option,
but this is very inconvenient if there are many of them.

Allowing to add extra dependencies listed in a file makes building
packages with automatic buildrequires much more convenient:
just do a first stage build, resulting in a file with list of
extra dependencies, and then add extra packages from this file
using "--extra-pkgs-from" ("-X") option that is added by this change.

Signed-off-by: Oleg Girko <ol@infoserver.lv>

osc/build.py

@@ -868,6 +868,12 @@ def main(apiurl, opts, argv):
     elif opts.extra_pkgs != ['']:
         extra_pkgs = opts.extra_pkgs
 
+    if opts.extra_pkgs_from:
+        for filename in opts.extra_pkgs_from:
+            with open(filename, encoding="utf-8") as f:
+                for line in f:
+                    extra_pkgs.append(line.rstrip('\n'))
+
     if xp:
         extra_pkgs += xp
 

osc/commandline.py

@@ -6290,6 +6290,8 @@ Please submit there instead, or use --nodevelproject to force direct submission.
                   help=HELP_MULTIBUILD_ONE)
     @cmdln.option('-x', '--extra-pkgs', metavar='PAC', action='append',
                   help='Add this package when installing the build-root')
+    @cmdln.option('-X', '--extra-pkgs-from', metavar='FILE', action='append',
+                  help='Add packages listed in this file when installing the build-root')
     @cmdln.option('--root', metavar='ROOT',
                   help='Build in specified directory')
     @cmdln.option('-j', '--jobs', metavar='N',