Re: thunderbird needs graphical pinentry to use external gnupg for encrypting emails

On 11/19/24 08:23, Xi Ruoyao ([email protected] via blfs-dev Mailing List) wrote:

> Basically our options are:
> 
> - Making KDE Framework recommended for pinentry.  The resulted pinentry-
> qt6 works for all DEs (not only KDE) but KDE Framework is a very bloat
> dependency (for anyone not using KDE).
> - Making gcr recommended for pinentry.  But the resulted pinentry-gnome3
> does not work at all for DEs other than GNOME.
> 
> Also if both gcr and KF6 are installed, pinentry-qt6 will *always* be
> used despite pinentry-gnome3 is installed.  But in GNOME the latter
> looks better.  Arch uses a custom script as /usr/bin/pinentry to "fix"
> the issue.
> 
> Now I'm feeling we need a lightweight pinentry implementation working on
> all DEs (and just delegate to pinentry-gnome3 or pinentry-qt6 on GNOME
> or KDE for "aesthetics").  But if we really pursue this we'll end up
> writing our own...

I find it interesting that Arch has pinentry dependencies:

     glib2
     glibc
     libassuan
     libglib-2.0.so=0-64 (glib2)
     libncursesw.so=6-64 (ncurses)
     libsecret
     libsecret-1.so=0-64 (libsecret)
     ncurses
     gcr (optional) - GNOME backend
     gtk3 (optional) - GTK backend
     kguiaddons (optional) - Qt6 backend
     kwayland5 (optional) - Qt5 backend
     kwindowsystem (optional) - Qt6 backend
     qt5-x11extras (optional) - Qt5 backend
     gcr (make)
     gtk2-compat (make)
     kguiaddons (make)
     kwayland5 (make)
     kwindowsystem (make)
     qt5-x11extras (make)
     qt6-base (make)

We have ...

required:
    libassuan-3.0.1 and libgpg-error-1.51  (plus LFS)

optional:
    Emacs,
    FLTK,
    Gcr-4.3.0 (or Gcr-3.41.2),
    KDE Frameworks-6.8.0 (or kwayland-6.2.3 for lxqt),
    libsecret, and
    efl

Comparing, it appears that we really need kguiaddons and kwindowsystem.
I think we have the others covered.

Checking my build log, I see

checking for elementary >= 1.18,ecore-x... no
configure: WARNING: pkg-config could not find the modules elementary or ecore-x
checking for gtk+-2.0 >= 2.12.0... no
checking for gcr-4... no
checking for KF5WaylandClient >= 5.60... no
checking for Qt5Core >= 5.0.0 Qt5Gui >= 5.0.0 Qt5Widgets >= 5.0.0... no
checking for QtCore >= 4.6.0 QtGui >= 4.6.0... no

and
checking for KF6GuiAddons >= 5.240... yes
checking for KF6WindowSystem >= 5.240... yes

And later:

    Pinentry v1.3.1 has been configured as follows:

    Revision:  dd8894f  (56712)
    Platform:  x86_64-pc-linux-gnu

    Curses Pinentry ..: yes
    TTY Pinentry .....: yes
    Emacs Pinentry ...: no
    EFL Pinentry .....: no
    GTK+-2 Pinentry ..: no
    GNOME 3 Pinentry .: yes
    Qt6 Pinentry .....: yes
    Qt5 Pinentry .....: no
    Qt4 Pinentry .....: no
    TQt Pinentry .....: no
    W32 Pinentry .....: no
    FLTK Pinentry ....: yes

    Fallback to Curses: yes
    Emacs integration : yes

    libsecret ........: yes

    Default Pinentry .: pinentry-qt

In my case I did have Qt6 and KF6 installed.

It looks to me that we need to rework the pinentry dependencies a bit,
but I am unsure what changes are needed. We can add  kwindowsystem for lxqt, but we 
do not have KF6GuiAddons as a separate package (I think it just has the same 
dependencies as kwindowsystem).

   -- Bruce

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