Windows nightly reports missing gstreamer DLLs

[jdm]

16:32 <imago> Hello! I'm trying to install the nightly build of servo on windows 10 64bit to try it out but it basically is lacking gstreamer ("libgstapp-1.0.0.dll was not found"). Any tips? Thanks
16:33 <imago> Or rather, it has 3 or so .dll files missing, all to do with "libg", i assume it gstreamer/gobject related
16:38 <jdm> imago: huh, that problem should have been solved already :<
16:38 <jdm> imago: is this a nightly downloaded today?
16:38 <imago> Yeah, i tried installing it just a few min ago

[atouchet]

Is this using the installer or the ZIP version? Was the GSteamer issue ever fixed for the ZIP version?

[jdm]

I don't believe the zip was ever fixed.

[ferjm]

No, the zip does not contain the required GStreamer dlls. I am not sure if we can add them there directly though. Would it be acceptable to add the GStreamer installer to the zip?

[muliar]

Latest installer: servo-latest.exe
Launching Servo Tech Demo, Errors:

The code execution cannot proceed because libgstapp-1.0-0.dll was not found. 
The code execution cannot proceed because libgstaudio-1.0-0.dll was not found. 
The code execution cannot proceed because libgstreamer-1.0-0.dll was not found. 
The code execution cannot proceed because libgobject-2.0-0.dll was not found. 

[atouchet]

@muliar do you have GStreamer installed on your C: drive?

[jdm]

They should not have to have GStreamer installed; the installer should put the files in the right place.

[atouchet]

@jdm last time I ran the installer it put the GStreamer files on the wrong drive and I had to install them manually to get it working.

[muliar]

@muliar do you have GStreamer installed on your C: drive?

Good point!
Servo Installer has installed gstreamer onto D:\ somehow yesterday: time modified is an evidence.
That's I do not understand: Windows Installer should install everything to standard %ProgramFiles% directory.

[ferjm]

Ugh, I have no idea how to do it, but I guess we'd need to inspect the registry to figure out where GStreamer was installed (and hope that GStreamer writes something there) before setting the PATH here.

/me reinstalls a Windows VM :(

[atouchet]

@ferjm would it be possible to dictate which drive GStreamer is installed to? I feel like the main issue here is that GStreamer sometimes installs to unexpected locations by default instead of C:. The installer from the GStreamer website does the same thing but at least with that one the directory can be changed.

[ferjm]

I don't know, I guess that's possible. The current installer already allows to manually change the installation path (through the Options menu).

I think it would be safer to get the installation path from the registry. I found that GStreamer writes the HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\GStreamer1.0\x86\InstallDir key in the registry. So we can use that value. I just need to figure out how to do it with WiX (and wait for the long VM builds).