I got it, at least in my case that is.

On ubuntu gimp-python is a separate package, unlike fedora. When I 
installed gimp-python, it works.

Jayesh

Jayesh Salvi wrote:
> Hi,
>
> I wrote a plugin few days back (GimpPublishr 
> <http://code.google.com/p/altcanvas/wiki/GimpPublishr>) to publish 
> images to Flickr/Picasa. It was tried by many and I had received 
> various complaints about plugin not getting loaded, even after 
> deploying in right directory. In some cases they had hit a bug in 
> plugin which would prevent Gimp from loading the plugin. In recent 
> versions I fixed some bugs in the plugin and put a top level 
> try-except block with a crash report dialog, so that any bug in plugin 
> won't go unnoticed silently.
>
> But even after that I kept hearing few cases where users won't see the 
> plugin loaded and still won't get any crash report.
>
> Today I started working on the same plugin again after some gap. Today 
> I tried it under two different installations of Gimp - on my Fedora 8 
> desktop and in a Ubuntu VM. I am running same version of Gimp at both 
> places, using same plugin files. Interestingly, the plugin doesn't 
> load in my ubuntu VM, but it does in my Fedora 8 desktop. I cleaned my 
> $HOME/.gimp-2.4 directory multiple times, but same result.
>
> Note these observations:
> 1) I also noticed that when the plugin gets loaded successfully on my 
> fedora box, the $HOME/.gimp-2.4/pluginrc file gets modified and I see 
> following entry appended to it:
> (plug-in-def "/home/jayesh/.gimp-2.4/plug-ins/publishr.py" 1202602069
>
> I don't see that happening on Ubuntu VM.
>
> 2) On BOTH the systems, when the Gimp splash image is diplaying the 
> plugins it is loading at startup, I DO SEE publishr.py (my plugin 
> file) being loaded. But I doubt that the register() function gets 
> called in the ubuntu case. I put a deliberate "raise Exception" just 
> before register() function, however it doesn't make any difference.
>
> Both are running same gimp version.
> $ gimp --version
> GNU Image Manipulation Program version 2.4.0-rc3
>
> The dump of gimprc is same on both systems (except for the web-browser 
> parameter). For Fedora 8 it is as follows.
>
> $ gimp --dump-gimprc
> # Dump of the GIMP default configuration
>
> (temp-path "${gimp_dir}/tmp")
> (swap-path "${gimp_dir}")
> (num-processors 1)
> (tile-cache-size 1024M)
> (interpolation-type cubic)
> (plug-in-path "${gimp_dir}/plug-ins:${gimp_plug_in_dir}/plug-ins")
> (module-path "${gimp_dir}/modules:${gimp_plug_in_dir}/modules")
> (interpreter-path 
> "${gimp_dir}/interpreters:${gimp_plug_in_dir}/interpreters")
> (environ-path "${gimp_dir}/environ:${gimp_plug_in_dir}/environ")
> (brush-path "${gimp_dir}/brushes:${gimp_data_dir}/brushes")
> (brush-path-writable "${gimp_dir}/brushes")
> (pattern-path "${gimp_dir}/patterns:${gimp_data_dir}/patterns")
> (pattern-path-writable "${gimp_dir}/patterns")
> (palette-path "${gimp_dir}/palettes:${gimp_data_dir}/palettes")
> (palette-path-writable "${gimp_dir}/palettes")
> (gradient-path "${gimp_dir}/gradients:${gimp_data_dir}/gradients")
> (gradient-path-writable "${gimp_dir}/gradients")
> (font-path "${gimp_dir}/fonts:${gimp_data_dir}/fonts")
> (default-brush "Circle (11)")
> (default-pattern "Pine")
> (default-palette "Default")
> (default-gradient "FG to BG (RGB)")
> (default-font "Sans")
> (global-brush yes)
> (global-pattern yes)
> (global-palette yes)
> (global-gradient yes)
> (global-font yes)
> (default-image
>     (width 420)
>     (height 300)
>     (unit pixels)
>     (xresolution 72.000000)
>     (yresolution 72.000000)
>     (resolution-unit inches)
>     (image-type rgb)
>     (fill-type background-fill)
>     (comment "Created with GIMP"))
> (default-grid
>     (style intersections)
>     (fgcolor (color-rgba 0.000000 0.000000 0.000000 1.000000))
>     (bgcolor (color-rgba 1.000000 1.000000 1.000000 1.000000))
>     (xspacing 32.000000)
>     (yspacing 32.000000)
>     (spacing-unit inches)
>     (xoffset 0.000000)
>     (yoffset 0.000000)
>     (offset-unit inches))
> (undo-levels 5)
> (undo-size 64M)
> (undo-preview-size large)
> (plug-in-history-size 10)
> (pluginrc-path "${gimp_dir}/pluginrc")
> (layer-previews yes)
> (layer-preview-size medium)
> (thumbnail-size normal)
> (thumbnail-filesize-limit 4M)
> (install-colormap no)
> (min-colors 144)
> (color-management
>     (mode display)
>     (display-profile-from-gdk yes)
>     (display-rendering-intent perceptual)
>     (simulation-rendering-intent perceptual)
>     (display-module "CdisplayLcms"))
> (color-profile-policy ask)
> (save-document-history yes)
> (transparency-size medium-checks)
> (transparency-type gray-checks)
> (snap-distance 8)
> (marching-ants-speed 100)
> (resize-windows-on-zoom no)
> (resize-windows-on-resize no)
> (default-dot-for-dot yes)
> (initial-zoom-to-fit yes)
> (perfect-mouse yes)
> (cursor-mode tool-icon)
> (cursor-updating yes)
> (show-brush-outline yes)
> (show-paint-tool-cursor yes)
> (image-title-format "%D*%f-%p.%i (%t, %L) %wx%h")
> (image-status-format "%n (%m)")
> (confirm-on-close yes)
> (monitor-xresolution 96.000000)
> (monitor-yresolution 96.000000)
> (monitor-resolution-from-windowing-system yes)
> (navigation-preview-size medium)
> (default-view
>     (show-menubar yes)
>     (show-rulers yes)
>     (show-scrollbars yes)
>     (show-statusbar yes)
>     (show-selection yes)
>     (show-layer-boundary yes)
>     (show-guides yes)
>     (show-grid no)
>     (show-sample-points yes)
>     (padding-mode default)
>     (padding-color (color-rgb 1.000000 1.000000 1.000000)))
> (default-fullscreen-view
>     (show-menubar yes)
>     (show-rulers yes)
>     (show-scrollbars yes)
>     (show-statusbar yes)
>     (show-selection yes)
>     (show-layer-boundary yes)
>     (show-guides yes)
>     (show-grid no)
>     (show-sample-points yes)
>     (padding-mode default)
>     (padding-color (color-rgb 1.000000 1.000000 1.000000)))
> (activate-on-focus yes)
> (space-bar-action pan)
> (xor-color (color-rgb 0.501961 1.000000 0.501961))
> (default-threshold 15)
> (move-tool-changes-active no)
> (trust-dirty-flag no)
> (save-device-status no)
> (save-session-info yes)
> (restore-session yes)
> (save-tool-options no)
> (show-tips yes)
> (show-tooltips yes)
> (tearoff-menus yes)
> (can-change-accels no)
> (save-accels yes)
> (restore-accels yes)
> (menu-mnemonics yes)
> (last-opened-size 10)
> (max-new-image-size 128M)
> (toolbox-color-area yes)
> (toolbox-foo-area no)
> (toolbox-image-area no)
> (theme-path "${gimp_dir}/themes:${gimp_data_dir}/themes")
> (theme "Default")
> (use-help yes)
> (show-help-button yes)
> (help-locales "")
> (help-browser gimp)
> (web-browser "htmlview %s")
> (toolbox-window-hint normal)
> (dock-window-hint normal)
> (transient-docks no)
> (cursor-format pixbuf)
> (fractalexplorer-path 
> "${gimp_dir}/fractalexplorer:${gimp_data_dir}/fractalexplorer")
> (gfig-path "${gimp_dir}/gfig:${gimp_data_dir}/gfig")
> (gflare-path "${gimp_dir}/gflare:${gimp_data_dir}/gflare")
> (gimpressionist-path 
> "${gimp_dir}/gimpressionist:${gimp_data_dir}/gimpressionist")
> (script-fu-path "${gimp_dir}/scripts:${gimp_data_dir}/scripts")
>
> Can someone help me understand the plugin load mechanism? What 
> variables (built-in/environment/config) play role in plugin loading?
>
> Thanks,
> Jayesh

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