Okay this one I think really is the installer. > [task 2017-08-25T13:54:23.782909Z] 13:54:23 INFO - cd ../../../installer-stage && 7z a -r -t7z /home/worker/workspace/build/src/obj-firefox/browser/installer/windows/instgen/app.7z -mx -m0=BCJ2 -m1=LZMA:d25 -m2=LZMA:d19 -m3=LZMA:d19 -mb0:1 -mb0s1:2 -mb0s2:3 > [task 2017-08-25T13:54:23.783008Z] 13:54:23 INFO - /bin/sh: 7z: command not found This will require two fixes: one to add p7zip to the image, and another to make the 7z command a variable.

Okay, I'm not going to try and land this before Bug 1330608 just for commit reasons, but if the image gets upx (which is provded via a toolchain job in 1330608) then the attached patches will fix this one.

Just assigning a priority for bookkeeping purposes; since this is currently in progress it gets to be P1.

Comment on attachment 8901208 [details] Bug 1393803 Parameterize 7z and look for it in moz.configure https://reviewboard.mozilla.org/r/172684/#review179868 ::: moz.configure:547 (Diff revision 3) > + '7z', > + '7za', > + ] > + > + return tuple(candidates) > +check_prog('7Z', sevenz_program, allow_missing=True) a shorter way to do this is check_prog('7Z', ('7z', '7za'), allow_missing=True, when=target_is_windows)

Comment on attachment 8901329 [details] Bug 1393803 Add p7zip to te docker image https://reviewboard.mozilla.org/r/172792/#review179888 I think you should just fold this in the other bug. (Otherwise you can't even land this before the other bug)

Comment on attachment 8901208 [details] Bug 1393803 Parameterize 7z and look for it in moz.configure https://reviewboard.mozilla.org/r/172684/#review183624

Try run: https://treeherder.mozilla.org/#/jobs?repo=try&revision=a68541e60847b015c86e714dce361f5bebe89cc8

Pushed by ryanvm@gmail.com: https://hg.mozilla.org/integration/autoland/rev/1105de1e6820 Parameterize 7z and look for it in moz.configure r=glandium