[gentoo-user] Package conflict while trying to emerge chromium

[gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

# emerge --ask chromium
...
> The following USE changes are necessary to proceed:
> (see "package.use" in the portage(5) man page for more details)
> # required by www-client/chromium-40.0.2214.111
> # required by chromium (argument)
> >=dev-libs/libxml2-2.9.2 icu

Ok, done.

# emerge --ask chromium
...
> !!! Multiple package instances within a single package slot have been pulled
> !!! into the dependency graph, resulting in a slot conflict:
>
> dev-libs/libxml2:2
>
>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
>                       ^^^                                                                                                                             >
>
>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
>                       ^^^^^                                                                                                > 
> It may be possible to solve this problem by using package.mask to
> prevent one of those packages from being selected. However, it is also
> possible that conflicting dependencies exist such that they are
> impossible to satisfy simultaneously.  If such a conflict exists in
> the dependencies of two different packages, then those packages can
> not be installed simultaneously. You may want to try a larger value of
> the --backtrack option, such as --backtrack=30, in order to see if
> that will solve this conflict automatically.

Ok.

# emerge --ask --backtrack=90 chromium
...
> !!! Multiple package instances within a single package slot have been pulled
> !!! into the dependency graph, resulting in a slot conflict:
> 
> dev-libs/libxml2:2
>
>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
>                       ^^^                                                                                                                             
>
>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
>                       ^^^^^                                                                                                
>
> It may be possible to solve this problem by using package.mask to
> prevent one of those packages from being selected. However, it is also
> possible that conflicting dependencies exist such that they are
> impossible to satisfy simultaneously.  If such a conflict exists in
> the dependencies of two different packages, then those packages can
> not be installed simultaneously.
> 
> For more information, see MASKED PACKAGES section in the emerge man
> page or refer to the Gentoo Handbook.

And I would not report it if ._cfg0002_package.use would not suggested to insert
   # required by www-client/chromium-40.0.2214.111
   # required by chromium (argument)
   >=dev-libs/libxml2-2.9.2 icu
into /etc/portage/package.use for the third time in a row.

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Neil Bothwick]

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On Thu, 12 Feb 2015 15:15:50 +0200, Gevisz wrote:

> And I would not report it if ._cfg0002_package.use would not suggested
> to insert # required by www-client/chromium-40.0.2214.111
>    # required by chromium (argument)
>    >=dev-libs/libxml2-2.9.2 icu  
> into /etc/portage/package.use for the third time in a row.

Has that line actually been inserted into package.use? Portage doesn't
add it to the live file, you need to run cfg-update or similar to handle
it.


-- 
Neil Bothwick

I just got lost in thought. It was unfamiliar territory.

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Alec Ten Harmsel]

On 02/12/2015 08:15 AM, Gevisz wrote:
> # emerge --ask chromium
> ...
>> The following USE changes are necessary to proceed:
>> (see "package.use" in the portage(5) man page for more details)
>> # required by www-client/chromium-40.0.2214.111
>> # required by chromium (argument)
>>> =dev-libs/libxml2-2.9.2 icu
> Ok, done.
>
> # emerge --ask chromium
> ...
>> !!! Multiple package instances within a single package slot have been pulled
>> !!! into the dependency graph, resulting in a slot conflict:
>>
>> dev-libs/libxml2:2
>>
>>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
>>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
>>                       ^^^                                                                                                                             >
>>
>>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
>>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
>>                       ^^^^^                                                                                                > 
>> It may be possible to solve this problem by using package.mask to
>> prevent one of those packages from being selected. However, it is also
>> possible that conflicting dependencies exist such that they are
>> impossible to satisfy simultaneously.  If such a conflict exists in
>> the dependencies of two different packages, then those packages can
>> not be installed simultaneously. You may want to try a larger value of
>> the --backtrack option, such as --backtrack=30, in order to see if
>> that will solve this conflict automatically.

I think (emphasis on the think) that qtwebkit needs libxml2 with -icu,
and chromium needs libxml2 with +icu. As far as I can tell from reading
a couple bug reports, it looks like you can rebuild qtwebkit with
-gstreamer (since that's what causes the !icu? blocker) and then you
should be able to install chromium. Apparently icu is pretty annoying.

Alternatively, you could just uninstall qtwebkit if you're not using it
for anything.

Alec

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Peter Humphrey]

On Thursday 12 February 2015 09:02:33 Alec Ten Harmsel wrote:

> I think (emphasis on the think) that qtwebkit needs libxml2 with -icu,
> and chromium needs libxml2 with +icu. As far as I can tell from
> reading a couple bug reports, it looks like you can rebuild qtwebkit
> with -gstreamer (since that's what causes the !icu? blocker) and then
> you should be able to install chromium.

I think (likewise) I remember having a similar conflict when I installed 
chromium some time ago, but although what you say rings some faint bells 
somewhere, Alec, it seems not to be the whole answer. I have qtwebkit 
and libxml2 with +icu here; also qtwebkit has +gstreamer, thus:

$ emerge -pv chromium qtwebkit libxml2

These are the packages that would be merged, in order:

Calculating dependencies  ... done!
[ebuild   R    ] dev-libs/libxml2-2.9.2:2  USE="icu ipv6 python readline 
-debug -examples -lzma -static-libs {-test}" ABI_X86="(64) (-32) (-x32)" 
PYTHON_TARGETS="python2_7 python3_3 -python3_4" 0 KiB
[ebuild   R    ] www-client/chromium-40.0.2214.111  USE="cups (pic) 
tcmalloc -bindist -custom-cflags -gnome -gnome-keyring -kerberos (-neon) 
-pulseaudio (-selinux) {-test} -widevine" LINGUAS="en_GB -am -ar -bg -bn 
-ca -cs -da -de -el -es -es_LA -et -fa -fi -fil -fr -gu -he -hi -hr -hu 
-id -it -ja -kn -ko -lt -lv -ml -mr -ms -nb -nl -pl -pt_BR -pt_PT -ro -
ru -sk -sl -sr -sv -sw -ta -te -th -tr -uk -vi -zh_CN -zh_TW" 0 KiB
[ebuild   R    ] dev-qt/qtwebkit-4.8.5:4  USE="exceptions gstreamer icu 
jit (-aqua) -debug -pch" 0 KiB

I wish I could remember how I got out of the conflict, but anno domini 
prevents it. Not much help, I know.  :-(

-- 
Rgds
Peter.

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Hinnerk van Bruinehsen]

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On Thu, Feb 12, 2015 at 09:02:33AM -0500, Alec Ten Harmsel wrote:
> 
> On 02/12/2015 08:15 AM, Gevisz wrote:
> > # emerge --ask chromium
> > ...
> >> The following USE changes are necessary to proceed:
> >> (see "package.use" in the portage(5) man page for more details)
> >> # required by www-client/chromium-40.0.2214.111
> >> # required by chromium (argument)
> >>> =dev-libs/libxml2-2.9.2 icu
> > Ok, done.
> >
> > # emerge --ask chromium
> > ...
> >> !!! Multiple package instances within a single package slot have been pulled
> >> !!! into the dependency graph, resulting in a slot conflict:
> >>
> >> dev-libs/libxml2:2
> >>
> >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
> >>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
> >>                       ^^^                                                                                                                             >
> >>
> >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
> >>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
> >>                       ^^^^^                                                                                                > 
> >> It may be possible to solve this problem by using package.mask to
> >> prevent one of those packages from being selected. However, it is also
> >> possible that conflicting dependencies exist such that they are
> >> impossible to satisfy simultaneously.  If such a conflict exists in
> >> the dependencies of two different packages, then those packages can
> >> not be installed simultaneously. You may want to try a larger value of
> >> the --backtrack option, such as --backtrack=30, in order to see if
> >> that will solve this conflict automatically.
> 
> I think (emphasis on the think) that qtwebkit needs libxml2 with -icu,
> and chromium needs libxml2 with +icu. As far as I can tell from reading
> a couple bug reports, it looks like you can rebuild qtwebkit with
> -gstreamer (since that's what causes the !icu? blocker) and then you
> should be able to install chromium. Apparently icu is pretty annoying.
> 
> Alternatively, you could just uninstall qtwebkit if you're not using it
> for anything.

...or you could enable +icu for qtwebkit so that qtwebkit also depends on
a libxml2 with icu support. That way you could resolve that blocker.

WKR
Hinnerk

PS: you'll likely still need to enable icu on libxml2 afterwards unless you
already did so.

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Fri, 13 Feb 2015 12:50:35 +0100 Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de> wrote:

> On Thu, Feb 12, 2015 at 09:02:33AM -0500, Alec Ten Harmsel wrote:
> > 
> > On 02/12/2015 08:15 AM, Gevisz wrote:
> > > # emerge --ask chromium
> > > ...
> > >> The following USE changes are necessary to proceed:
> > >> (see "package.use" in the portage(5) man page for more details)
> > >> # required by www-client/chromium-40.0.2214.111
> > >> # required by chromium (argument)
> > >>> =dev-libs/libxml2-2.9.2 icu
> > > Ok, done.
> > >
> > > # emerge --ask chromium
> > > ...
> > >> !!! Multiple package instances within a single package slot have been pulled
> > >> !!! into the dependency graph, resulting in a slot conflict:
> > >>
> > >> dev-libs/libxml2:2
> > >>
> > >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
> > >>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
> > >>                       ^^^                                                                                                                             >
> > >>
> > >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
> > >>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
> > >>                       ^^^^^                                                                                                > 
> > >> It may be possible to solve this problem by using package.mask to
> > >> prevent one of those packages from being selected. However, it is also
> > >> possible that conflicting dependencies exist such that they are
> > >> impossible to satisfy simultaneously.  If such a conflict exists in
> > >> the dependencies of two different packages, then those packages can
> > >> not be installed simultaneously. You may want to try a larger value of
> > >> the --backtrack option, such as --backtrack=30, in order to see if
> > >> that will solve this conflict automatically.
> > 
> > I think (emphasis on the think) that qtwebkit needs libxml2 with -icu,
> > and chromium needs libxml2 with +icu. As far as I can tell from reading
> > a couple bug reports, it looks like you can rebuild qtwebkit with
> > -gstreamer (since that's what causes the !icu? blocker) and then you
> > should be able to install chromium. Apparently icu is pretty annoying.
> > 
> > Alternatively, you could just uninstall qtwebkit if you're not using it
> > for anything.
> 
> ...or you could enable +icu for qtwebkit so that qtwebkit also depends on
> a libxml2 with icu support. That way you could resolve that blocker.

It works. I have discovered it myself earlier today.

Nevertheless, it is odd as -icu for qtwebkit was set by default.

> PS: you'll likely still need to enable icu on libxml2 afterwards unless you
> already did so.

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Thu, 12 Feb 2015 13:24:55 +0000 Neil Bothwick <neil@digimed.co.uk> wrote:

> On Thu, 12 Feb 2015 15:15:50 +0200, Gevisz wrote:
> 
> > And I would not report it if ._cfg0002_package.use would not suggested
> > to insert # required by www-client/chromium-40.0.2214.111
> >    # required by chromium (argument)
> >    >=dev-libs/libxml2-2.9.2 icu  
> > into /etc/portage/package.use for the third time in a row.
> 
> Has that line actually been inserted into package.use?
> Portage doesn't add it to the live file, you need to run
> cfg-update or similar to handle it.

As I have said, it was inserted in the ._cfg0002_package.use file
as the recommendation to insert it to the package.use.

But it is odd, as the qtwebkit package was by default built
with -ice USE flag and that created the blocker.

This situation would not appear if instead of the following,
actual insertion into the ._cfg0002_package.use file:
# required by www-client/chromium-40.0.2214.111
# required by chromium (argument)
>=dev-libs/libxml2-2.9.2 icu

it was suggested to insert
# required by www-client/chromium-40.0.2214.111
# required by chromium (argument)
>=dev-libs/libxml2-2.9.2 icu
dev-qt/qtwebkit icu

or something like that.

I have made such changes earlier today and the blocker have gone.

Nevertheless qtwebkit have not compiled cleanly but produced the following warning:

>>> Completed installing qtwebkit-4.8.5 into /var/tmp/portage/dev-qt/qtwebkit-4.8.5/image/


 * QA Notice: Package triggers severe warnings which indicate that it
 *            may exhibit random runtime failures.
 * libjpeg.cpp:51:32: warning: ‘cinfo’ is used uninitialized in this function [-Wuninitialized]
 * glib.cpp:55:38: warning: ‘pollfd’ is used uninitialized in this function [-Wuninitialized]
 * dom/Element.cpp:1083:112: warning: converting ‘false’ to pointer type ‘WebCore::RenderStyle*’ [-Wconversion-null]

 * Please do not file a Gentoo bug and instead report the above QA
 * issues directly to the upstream developers of this software.
 * Homepage: https://www.qt.io/ https://qt-project.org/
strip: x86_64-pc-linux-gnu-strip --strip-unneeded -R .comment -R .GCC.command.line -R .note.gnu.gold-version
   usr/lib64/qt4/libQtWebKit.so.4.9.4

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Thu, 12 Feb 2015 09:02:33 -0500 Alec Ten Harmsel <alec@alectenharmsel.com> wrote:

> On 02/12/2015 08:15 AM, Gevisz wrote:
> > # emerge --ask chromium
> > ...
> >> The following USE changes are necessary to proceed:
> >> (see "package.use" in the portage(5) man page for more details)
> >> # required by www-client/chromium-40.0.2214.111
> >> # required by chromium (argument)
> >>> =dev-libs/libxml2-2.9.2 icu
> > Ok, done.
> >
> > # emerge --ask chromium
> > ...
> >> !!! Multiple package instances within a single package slot have been pulled
> >> !!! into the dependency graph, resulting in a slot conflict:
> >>
> >> dev-libs/libxml2:2
> >>
> >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, ebuild scheduled for merge) pulled in by
> >>    dev-libs/libxml2:=[icu] required by (www-client/chromium-40.0.2214.111:0/0::gentoo, ebuild scheduled for merge)
> >>                       ^^^                                                                                                                             >
> >>
> >>  (dev-libs/libxml2-2.9.2:2/2::gentoo, installed) pulled in by
> >>    dev-libs/libxml2:2[!icu?] required by (dev-qt/qtwebkit-4.8.5:4/4::gentoo, installed)
> >>                       ^^^^^                                                                                                > 
> >> It may be possible to solve this problem by using package.mask to
> >> prevent one of those packages from being selected. However, it is also
> >> possible that conflicting dependencies exist such that they are
> >> impossible to satisfy simultaneously.  If such a conflict exists in
> >> the dependencies of two different packages, then those packages can
> >> not be installed simultaneously. You may want to try a larger value of
> >> the --backtrack option, such as --backtrack=30, in order to see if
> >> that will solve this conflict automatically.
> 
> I think (emphasis on the think) that qtwebkit needs libxml2 with -icu,
> and chromium needs libxml2 with +icu.

Thank you for your answer and sorry for the delay in replying to it.

When I first read your comment, I wanted to write: "You've got it!"
But now, when the issue is solved, I should acknowledge that the qtwebkit
has not required -icu, it was just compiled with -icu by default and that
created the blocker.

> As far as I can tell from reading a couple bug reports, it looks like
> you can rebuild qtwebkit with -gstreamer (since that's what causes
> the !icu? blocker) and then you should be able to install chromium.
> Apparently icu is pretty annoying.
> 
> Alternatively, you could just uninstall qtwebkit if you're not using it
> for anything.

These your suggestions actually forced me to delay the answer, as I needed
time to check which of my application packages depend on qtwebkit and if
I really need gstreamer.

Now, when the problem has been solved, it is not so important but nevertheless:

1. At least the app-text/goldendict, that I need very much, depends on qtwebkit.

2. I am not sure but my guess is that the gstreamer allows me to watch
   the video from youtube (partially), edX, cousera, etc. in a web-browser
   (I mainly use Firefox), as I never install any flash player to avoid
   too many "flashing" while browsing the Internet. (Would be interested
   to know if this my guess is correct.)

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Alec Ten Harmsel]

On 02/13/2015 01:02 PM, Gevisz wrote:
>
> These your suggestions actually forced me to delay the answer, as I needed
> time to check which of my application packages depend on qtwebkit and if
> I really need gstreamer.

My bad. That's why I prefaced my response with "(emphasis on think)" - I
don't have qtwebkit installed, nor gstreamer, nor chromium.

Alec

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Neil Bothwick]

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On Fri, 13 Feb 2015 19:36:45 +0200, Gevisz wrote:

> > Has that line actually been inserted into package.use?
> > Portage doesn't add it to the live file, you need to run
> > cfg-update or similar to handle it.  
> 
> As I have said, it was inserted in the ._cfg0002_package.use file
> as the recommendation to insert it to the package.use.

Inserting it into ._cfg0002_package.use does nothing but cause portage to
prompt you to run etc-update. Until you do that nothing has changed as
portage will still tell you to add the USE change.


-- 
Neil Bothwick

Exercise daily. Eat wisely. Die anyway.

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Walter Dnes]

On Fri, Feb 13, 2015 at 08:02:08PM +0200, Gevisz wrote
> 
> 2. I am not sure but my guess is that the gstreamer allows me to watch
>    the video from youtube (partially), edX, cousera, etc. in a web-browser
>    (I mainly use Firefox), as I never install any flash player to avoid
>    too many "flashing" while browsing the Internet. (Would be interested
>    to know if this my guess is correct.)

  I use the Seamonkey variant of Firefox.  It has a more "classic" GUI
interface, and a few other differences.  It also has an option in the
settings...

Edit ==> Preferences ==> Advanced ==> Scripts & Plugins

  You can choose whether or not to "Activate all plugins by default".
***THIS IS NOT AN ADDON*** like Flashblock, so you don't have to worry
about the author keeping up with the current version of the browser.  It
is a built-in setting.  If you turn that option off, you get a box that
says "Activate Adobe Flash" on any page with Flash on it.  You can click
on the box, and that activates only the one instance.  If there are
several flash boxes on a page, you can click on just the one(s) you
want.

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Marc Joliet]

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Am Fri, 13 Feb 2015 18:11:31 -0500
schrieb "Walter Dnes" <waltdnes@waltdnes.org>:

> On Fri, Feb 13, 2015 at 08:02:08PM +0200, Gevisz wrote
> > 
> > 2. I am not sure but my guess is that the gstreamer allows me to watch
> >    the video from youtube (partially), edX, cousera, etc. in a web-browser
> >    (I mainly use Firefox), as I never install any flash player to avoid
> >    too many "flashing" while browsing the Internet. (Would be interested
> >    to know if this my guess is correct.)

Yes, you are correct, at least for Firefox (but I would be surprised if it were
different for qtwebkit). Note that the dependencies aren't specified in the
ebuild itself, but in the mozconfig-* eclasses.  See for example the
mozconfig-v5.34 eclass:

	gstreamer? (
		>=media-libs/gstreamer-1.2.3:1.0
		>=media-libs/gst-plugins-base-1.2.3:1.0
		>=media-libs/gst-plugins-good-1.2.3:1.0
		>=media-plugins/gst-plugins-libav-1.1.0_pre20130128-r1:1.0
	)

The libav gstreamer plug-in is what lets you watch MP4 videos (and don't let the
name fool you, it also works with ffmpeg). And if you install
gst-plugins-mad:1.0, then you can also play MP3s in Firefox (see
https://bugs.gentoo.org/show_bug.cgi?id=536530).

>   I use the Seamonkey variant of Firefox.  It has a more "classic" GUI
> interface, and a few other differences.  It also has an option in the
> settings...
> 
> Edit ==> Preferences ==> Advanced ==> Scripts & Plugins
> 
>   You can choose whether or not to "Activate all plugins by default".
> ***THIS IS NOT AN ADDON*** like Flashblock, so you don't have to worry
> about the author keeping up with the current version of the browser.  It
> is a built-in setting.  If you turn that option off, you get a box that
> says "Activate Adobe Flash" on any page with Flash on it.  You can click
> on the box, and that activates only the one instance.  If there are
> several flash boxes on a page, you can click on just the one(s) you
> want.

A variant of this setting also exists in Firefox, albeit it is accessed from the
about:addons page under Plugins.  There you get a per-plugin tri-state setting,
where you can choose between "always on", "always off", or "always ask".  With
the latter, you get the same behaviour you described: a placeholder that you can
click to selectively activate Flash.

Personally, I don't like that way of doing things, because unless you
completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
videos (I guess it sees that you have Flash installed?). Thus, I use the
FlashDisable extension, which simply makes it easier to toggle between "always
on" and "always off" (although it won't allow you to selectively activate
Flash per instance on a page, which is too bad, although I rarely see this).

One thing I've joyfully noticed is how rare the instances where I need to
activate Flash are becoming :-) .

-- 
Marc Joliet
--
"People who think they know everything really annoy those of us who know we
don't" - Bjarne Stroustrup

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Fri, 13 Feb 2015 18:11:31 -0500 "Walter Dnes" <waltdnes@waltdnes.org> wrote:

> On Fri, Feb 13, 2015 at 08:02:08PM +0200, Gevisz wrote
> > 
> > 2. I am not sure but my guess is that the gstreamer allows me to watch
> >    the video from youtube (partially), edX, cousera, etc. in a web-browser
> >    (I mainly use Firefox), as I never install any flash player to avoid
> >    too many "flashing" while browsing the Internet. (Would be interested
> >    to know if this my guess is correct.)
> 
>   I use the Seamonkey variant of Firefox.  It has a more "classic" GUI
> interface, and a few other differences.  It also has an option in the
> settings...
> 
> Edit ==> Preferences ==> Advanced ==> Scripts & Plugins
> 
>   You can choose whether or not to "Activate all plugins by default".
> ***THIS IS NOT AN ADDON*** like Flashblock, so you don't have to worry
> about the author keeping up with the current version of the browser.  It
> is a built-in setting.  If you turn that option off, you get a box that
> says "Activate Adobe Flash" on any page with Flash on it.  You can click
> on the box, and that activates only the one instance.  If there are
> several flash boxes on a page, you can click on just the one(s) you
> want.

Thank you for information I will try to look into the Firefox settings
more attentively now. But about 6 or 7 years ago, yet on Ubuntu, I tried
to disable Adobe Flash player and have managed to accomplish it only after
uninstalling it. Interestingly enough, after that I was no able to install
it back on the same computer. Well, to be more precise, I could install it
back, but it did not work any more. :-)  

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Sat, 14 Feb 2015 11:36:48 +0100 Marc Joliet <marcec@gmx.de> wrote:

> Am Fri, 13 Feb 2015 18:11:31 -0500
> schrieb "Walter Dnes" <waltdnes@waltdnes.org>:
> 
> > On Fri, Feb 13, 2015 at 08:02:08PM +0200, Gevisz wrote
> > > 
> > > 2. I am not sure but my guess is that the gstreamer allows me to watch
> > >    the video from youtube (partially), edX, cousera, etc. in a web-browser
> > >    (I mainly use Firefox), as I never install any flash player to avoid
> > >    too many "flashing" while browsing the Internet. (Would be interested
> > >    to know if this my guess is correct.)
> 
> Yes, you are correct, at least for Firefox (but I would be surprised if it were
> different for qtwebkit). Note that the dependencies aren't specified in the
> ebuild itself, but in the mozconfig-* eclasses.  See for example the
> mozconfig-v5.34 eclass:
> 
> 	gstreamer? (
> 		>=media-libs/gstreamer-1.2.3:1.0
> 		>=media-libs/gst-plugins-base-1.2.3:1.0
> 		>=media-libs/gst-plugins-good-1.2.3:1.0
> 		>=media-plugins/gst-plugins-libav-1.1.0_pre20130128-r1:1.0
> 	)
> 
> The libav gstreamer plug-in is what lets you watch MP4 videos (and don't
> let the name fool you, it also works with ffmpeg).

Thank you for information.

> And if you install
> gst-plugins-mad:1.0, then you can also play MP3s in Firefox (see
> https://bugs.gentoo.org/show_bug.cgi?id=536530).
> 
> >   I use the Seamonkey variant of Firefox.  It has a more "classic" GUI
> > interface, and a few other differences.  It also has an option in the
> > settings...
> > 
> > Edit ==> Preferences ==> Advanced ==> Scripts & Plugins
> > 
> >   You can choose whether or not to "Activate all plugins by default".
> > ***THIS IS NOT AN ADDON*** like Flashblock, so you don't have to worry
> > about the author keeping up with the current version of the browser.  It
> > is a built-in setting.  If you turn that option off, you get a box that
> > says "Activate Adobe Flash" on any page with Flash on it.  You can click
> > on the box, and that activates only the one instance.  If there are
> > several flash boxes on a page, you can click on just the one(s) you
> > want.
> 
> A variant of this setting also exists in Firefox, albeit it is accessed from the
> about:addons page under Plugins.  There you get a per-plugin tri-state setting,
> where you can choose between "always on", "always off", or "always ask".  With
> the latter, you get the same behaviour you described: a placeholder that you can
> click to selectively activate Flash.
> 
> Personally, I don't like that way of doing things, because unless you
> completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
> videos (I guess it sees that you have Flash installed?).

Yes, it is bad because now I can see at least half of the youtube videos via html5.

> Thus, I use the FlashDisable extension, which simply makes it easier to toggle
> between "always on" and "always off" (although it won't allow you to selectively
> activate Flash per instance on a page, which is too bad, although I rarely see this).

Thank you for this hint also.

> One thing I've joyfully noticed is how rare the instances where I need to
> activate Flash are becoming :-).

I hope that with time youtube will completely switch to html5, so flash player
won't be needed. Till then youtube-dl can be a good way to "switch flash player on,"
at least for youtube. :-)

 

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Fri, 13 Feb 2015 23:05:16 +0000 Neil Bothwick <neil@digimed.co.uk> wrote:

> On Fri, 13 Feb 2015 19:36:45 +0200, Gevisz wrote:
> 
> > > Has that line actually been inserted into package.use?
> > > Portage doesn't add it to the live file, you need to run
> > > cfg-update or similar to handle it.  
> > 
> > As I have said, it was inserted in the ._cfg0002_package.use file
> > as the recommendation to insert it to the package.use.
> 
> Inserting it into ._cfg0002_package.use does nothing but cause portage to
> prompt you to run etc-update. Until you do that nothing has changed as
> portage will still tell you to add the USE change.

Thank you for your reply but my point was that two *default* USE flag setting
produce the package block.

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Neil Bothwick]

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On Mon, 16 Feb 2015 20:47:03 +0200, Gevisz wrote:

> > > As I have said, it was inserted in the ._cfg0002_package.use file
> > > as the recommendation to insert it to the package.use.  
> > 
> > Inserting it into ._cfg0002_package.use does nothing but cause
> > portage to prompt you to run etc-update. Until you do that nothing
> > has changed as portage will still tell you to add the USE change.  
> 
> Thank you for your reply but my point was that two *default* USE flag
> setting produce the package block.

Once you have anything in package.use, you are not running defaults.


-- 
Neil Bothwick

deja noo - reminds you of the last time you visited Scotland

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Stroller]

On Sat, 14 February 2015, at 10:36 am, Marc Joliet <marcec@gmx.de> wrote:

> Personally, I don't like that way of doing things, because unless you
> completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
> videos

YouTube have recently switched to HTML5 as the default:

http://www.theverge.com/2015/1/27/7926001/youtube-drops-flash-for-html5-video-default

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Marc Joliet]

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Am Tue, 17 Feb 2015 12:09:23 +0000
schrieb Stroller <stroller@stellar.eclipse.co.uk>:

> 
> On Sat, 14 February 2015, at 10:36 am, Marc Joliet <marcec@gmx.de> wrote:
> 
> > Personally, I don't like that way of doing things, because unless you
> > completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
> > videos
> 
> YouTube have recently switched to HTML5 as the default:
> 
> http://www.theverge.com/2015/1/27/7926001/youtube-drops-flash-for-html5-video-default

Excellent :-) !

One minor(!) problem though: that does not include the current Firefox 35
(they say they enabled HTML5 video for Firefox *betas*).  But starting with
Firefox 36 I'll try running without FlashDisable and see what it's like.

-- 
Marc Joliet
--
"People who think they know everything really annoy those of us who know we
don't" - Bjarne Stroustrup

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Walter Dnes]

On Tue, Feb 17, 2015 at 11:09:43PM +0100, Marc Joliet wrote
> Am Tue, 17 Feb 2015 12:09:23 +0000
> schrieb Stroller <stroller@stellar.eclipse.co.uk>:
> 
> > 
> > On Sat, 14 February 2015, at 10:36 am, Marc Joliet <marcec@gmx.de> wrote:
> > 
> > > Personally, I don't like that way of doing things, because unless you
> > > you completely deactivate Flash, Youtube will stupidly never attempt
> > > to use HTML5 videos
> > 
> > YouTube have recently switched to HTML5 as the default:
> > 
> > http://www.theverge.com/2015/1/27/7926001/youtube-drops-flash-for-html5-video-default
> 
> Excellent :-) !
> 
> One minor(!) problem though: that does not include the current
> Firefox 35 (they say they enabled HTML5 video for Firefox *betas*).
> But starting with Firefox 36 I'll try running without FlashDisable
> and see what it's like.

  I'm running the Seamonkey-2.32 variant of Firefox, and Seamonkey is
nowhere near Firefox beta.  It seems to work on Youtube in HTML5.  A few
oddities, which may or may not be specific to Seamonkey...

- It has only 2 resolutions... 360p... and "auto"... which gives 360p<G>.
  This is the case even for "1080p demo" videos.  Mind you, the video
  quality looks (to me at least) a lot better than 360p on Flash looks.

- There are 2 player sizes.  "Default" is the standard size that you're
  used to in the upper left corner of the screen.  "Theater Mode" expands
  to the full width of the browser.  The vertical size scales to the
  proper height for the aspect ratio.  However, it's not true fullscreen
  because you still see the browser frame/bars/etc, even if the browser
  is maximized.  On some other HTML5 video demos, you can right click,
  and get a menu which includes a "Fullscreen" item that gives true
  fullscreen.  But this does not appear on Youtube.

- Last, but not least, the cpu load is a lot lower when playing HTML5
  video than Flash video.  This is important to me, because I'm trying
  to run my 7 and 1/2 year old Dell (Intel Core Duo) into the ground.
  It refuses to die.

  I have multiple Seamonkey profiles, dedicated to specific tasks (You
can do this with Firefox, too).  It's ironic that the first profile on
which I can turn off Flash is my "youtube" profile.  I still need Flash
for NHL GameCentreLive, internet radio, etc.  Your version of Firefox
might HTML5 video now.  Try it.

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Marc Joliet]

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Am Tue, 17 Feb 2015 21:43:22 -0500
schrieb "Walter Dnes" <waltdnes@waltdnes.org>:

> On Tue, Feb 17, 2015 at 11:09:43PM +0100, Marc Joliet wrote
> > Am Tue, 17 Feb 2015 12:09:23 +0000
> > schrieb Stroller <stroller@stellar.eclipse.co.uk>:
> > 
> > > 
> > > On Sat, 14 February 2015, at 10:36 am, Marc Joliet <marcec@gmx.de> wrote:
> > > 
> > > > Personally, I don't like that way of doing things, because unless you
> > > > you completely deactivate Flash, Youtube will stupidly never attempt
> > > > to use HTML5 videos
> > > 
> > > YouTube have recently switched to HTML5 as the default:
> > > 
> > > http://www.theverge.com/2015/1/27/7926001/youtube-drops-flash-for-html5-video-default
> > 
> > Excellent :-) !
> > 
> > One minor(!) problem though: that does not include the current
> > Firefox 35 (they say they enabled HTML5 video for Firefox *betas*).
> > But starting with Firefox 36 I'll try running without FlashDisable
> > and see what it's like.
> 
>   I'm running the Seamonkey-2.32 variant of Firefox, and Seamonkey is
> nowhere near Firefox beta.  It seems to work on Youtube in HTML5.  A few
> oddities, which may or may not be specific to Seamonkey...
> 
> - It has only 2 resolutions... 360p... and "auto"... which gives 360p<G>.
>   This is the case even for "1080p demo" videos.  Mind you, the video
>   quality looks (to me at least) a lot better than 360p on Flash looks.

Hmm, that's certainly an oddity.  What about this video:
https://www.youtube.com/watch?v=kHO389dvj6Y.  I get the choice between 360p and
720p.

> - There are 2 player sizes.  "Default" is the standard size that you're
>   used to in the upper left corner of the screen.  "Theater Mode" expands
>   to the full width of the browser.  The vertical size scales to the
>   proper height for the aspect ratio.  However, it's not true fullscreen
>   because you still see the browser frame/bars/etc, even if the browser
>   is maximized.  On some other HTML5 video demos, you can right click,
>   and get a menu which includes a "Fullscreen" item that gives true
>   fullscreen.  But this does not appear on Youtube.

I do get the fullscreen option, it appears right next to the "theater" mode
button.

> - Last, but not least, the cpu load is a lot lower when playing HTML5
>   video than Flash video.  This is important to me, because I'm trying
>   to run my 7 and 1/2 year old Dell (Intel Core Duo) into the ground.
>   It refuses to die.

My Desktop is similarly old (Athlon64 X2 EE), but a couple of upgrades have kept
it mostly pleasant to use, although one can "compensate" an old CPU only so
much.  As far as I remember the only things that have died so far are HDDs and
PSUs (oh, and the original GPU!).

>   I have multiple Seamonkey profiles, dedicated to specific tasks (You
> can do this with Firefox, too).  It's ironic that the first profile on
> which I can turn off Flash is my "youtube" profile.  I still need Flash
> for NHL GameCentreLive, internet radio, etc.  Your version of Firefox
> might HTML5 video now.  Try it.

It's not that it doesn't do HTML5 video, I've been using that ever since I
noticed the "gstreamer" USE flag in December 2012 (/etc in git is nice ;)).
It's just that I can't deactivate FlashDisable and expect YouTube to default to
HTML5 videos yet (see the top of the quoted text above).

FWIW, I *did* try it and still got the undesired behaviour (Youtube trying to
use Flash).

Hmm, maybe you're logged in to Youtube?  Or maybe I didn't wait long enough
after the "please activate your Flash plug-in" message? Or maybe they treat
Seamonkey differently (but why?)?  I suppose I'll try again later.

-- 
Marc Joliet
--
"People who think they know everything really annoy those of us who know we
don't" - Bjarne Stroustrup

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Re: [gentoo-user] Package conflict while trying to emerge chromium

[Gevisz]

On Tue, 17 Feb 2015 12:09:23 +0000 Stroller <stroller@stellar.eclipse.co.uk> wrote:

> 
> On Sat, 14 February 2015, at 10:36 am, Marc Joliet <marcec@gmx.de> wrote:
> 
> > Personally, I don't like that way of doing things, because unless you
> > completely deactivate Flash, Youtube will stupidly never attempt to use HTML5
> > videos
> 
> YouTube have recently switched to HTML5 as the default:
> 
> http://www.theverge.com/2015/1/27/7926001/youtube-drops-flash-for-html5-video-default
> 

It is a good news!

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Walter Dnes]

On Wed, Feb 18, 2015 at 09:09:18AM +0100, Marc Joliet wrote
> 
> It's not that it doesn't do HTML5 video, I've been using that ever
> since I noticed the "gstreamer" USE flag in December 2012 (/etc in
> git is nice ;)).

  I have the gstreamer flag (and everything except "jit") turned off for
seamonkey.  Here's output from "emerge -pv seamonkey" on my machine...

www-client/seamonkey-2.32  USE="jit -chatzilla -crypt -custom-cflags -custom-optimization -dbus -debug -gmp-autoupdate -gstreamer -ipc -minimal -pulseaudio -roaming (-selinux) -startup-notification -system-cairo -system-icu -system-jpeg -system-libvpx -system-sqlite {-test} -wifi" LINGUAS="-be -ca -cs -de -en_GB -es_AR -es_ES -fi -fr -gl -hu -it -ja -lt -nb_NO -nl -pl -pt_PT -ru -sk -sv_SE -tr -uk -zh_CN -zh_TW" 0 KiB

>   It's just that I can't deactivate FlashDisable and expect YouTube
> to default to HTML5 videos yet (see the top of the quoted text above).
> 
> FWIW, I *did* try it and still got the undesired behaviour (Youtube
> trying to use Flash).

  I think we're talking past each other here.  FlashDisable is irrelavant
to the way I do it.  The really important concept is that each profile
is a separate universe unto itself.  And you can set totally different
behaviours in each profile.  In my Youtube profile, I totally disable
Flash.  As far as the web page is concerned, I don't have Flash
installed at all.  Like I said above, FlashDisable is irrelavant
to the way I do it.  Here's the Seamonkey menu tree; Firefox may be
different.

Tools ==> Add-ons Manager ==> Plugins (on the left sidebar)

  I select "Shockwave Flash" from the "Plugins" list, and there's a
dropdown menu with 3 choices
* Ask to Activate
* Always Activate
* Never Activate

  I select "Never Activate", and Youtube thinks I don't have Flash
installed, forcing it to go with HTML5 mode.

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications

Re: [gentoo-user] Package conflict while trying to emerge chromium

[Marc Joliet]

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Am Wed, 18 Feb 2015 19:46:58 -0500
schrieb "Walter Dnes" <waltdnes@waltdnes.org>:

> On Wed, Feb 18, 2015 at 09:09:18AM +0100, Marc Joliet wrote
> > 
> > It's not that it doesn't do HTML5 video, I've been using that ever
> > since I noticed the "gstreamer" USE flag in December 2012 (/etc in
> > git is nice ;)).
> 
>   I have the gstreamer flag (and everything except "jit") turned off for
> seamonkey.  Here's output from "emerge -pv seamonkey" on my machine...
> 
> www-client/seamonkey-2.32  USE="jit -chatzilla -crypt -custom-cflags -custom-optimization -dbus -debug -gmp-autoupdate -gstreamer -ipc -minimal -pulseaudio -roaming (-selinux) -startup-notification -system-cairo -system-icu -system-jpeg -system-libvpx -system-sqlite {-test} -wifi" LINGUAS="-be -ca -cs -de -en_GB -es_AR -es_ES -fi -fr -gl -hu -it -ja -lt -nb_NO -nl -pl -pt_PT -ru -sk -sv_SE -tr -uk -zh_CN -zh_TW" 0 KiB

Well, AFAIK you only really need gstreamer support for non-free formats (i.e.,
MP4, MP3). In fact, perhaps that's why that 1080p video only played in 360p:
maybe the 1080p version is only available as an MP4 (youtube-dl could probably
verify)?

Of course, for all I know you don't care about playing non-free formats, and
that'd be fine.

> >   It's just that I can't deactivate FlashDisable and expect YouTube
> > to default to HTML5 videos yet (see the top of the quoted text above).
> > 
> > FWIW, I *did* try it and still got the undesired behaviour (Youtube
> > trying to use Flash).
> 
>   I think we're talking past each other here.  FlashDisable is irrelavant
> to the way I do it.  The really important concept is that each profile
> is a separate universe unto itself.  And you can set totally different
> behaviours in each profile.  In my Youtube profile, I totally disable
> Flash.  As far as the web page is concerned, I don't have Flash
> installed at all.  Like I said above, FlashDisable is irrelavant
> to the way I do it.  Here's the Seamonkey menu tree; Firefox may be
> different.
> 
> Tools ==> Add-ons Manager ==> Plugins (on the left sidebar)
> 
>   I select "Shockwave Flash" from the "Plugins" list, and there's a
> dropdown menu with 3 choices
> * Ask to Activate
> * Always Activate
> * Never Activate
> 
>   I select "Never Activate", and Youtube thinks I don't have Flash
> installed, forcing it to go with HTML5 mode.

Yeah, you're right, we were talking past each other :) .

(FWIW, that's exactly the same menu tree as in Firefox.)

-- 
Marc Joliet
--
"People who think they know everything really annoy those of us who know we
don't" - Bjarne Stroustrup

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