eb6a5dab5c (gnu: zathura: Update to 0.3.9)
silently broke Zathura's (Guix-specific) ZATHURA_PLUGIN_PATH mechanism.
My environment was so filthy that all happened to work just fine, but as
usual Marius was right and the patch needed tweaking.
* gnu/packages/patches/zathura-plugindir-environment-variable.patch:
Tweak.
* gnu/packages/pdf.scm (zathura): New variable.
* gnu/packages/patches/zathura-plugindir-environment-variable.patch: New file.
* gnu-system.am: Add it.