TEMP Add "playgound" for runninc plasma on another virtual terminal.

Following the idea from
+<https://guix.gnu.org/de/blog/2019/running-a-guix-xfce-desktop-on-centos-7>:
Start an X11 server (provided by the host OS) on another
virtual terminal and make this run the desktop.

99-playground/.xinitrc

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+exec >$HOME/xerrors 2>&1
+
+# test: dies a simple X11 program start?
+#exec xvt  -geometry  +1+1  -display $DISPLAY
+
+# start plasma under strace and collect trace files in /tmp
+/usr/bin/rm -rf /tmp/trace.*
+exec /usr/bin/strace -ff -o /tmp/trace.txt -e trace=file \
+	    -e trace=file \
+	    --no-abbrev -e abbrev=!execve -s 2000 \
+     startplasma-x11
+#exec startplasma-x11

99-playground/.xserverrc

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+VTNR=$XDG_VTNR
+((VTNR++)) # overwrite use next VT
+
+# Use the X server provided by the foreign system (host OS)
+PATH=/usr/local/bin:/usr/bin
+exec /usr/bin/Xorg -novtswitch -nolisten tcp "$@" vt$VTNR

99-playground/00-README.txt

@@ -0,0 +1,54 @@
+
+This directory contains file to test the desktop following the idea from
+<https://guix.gnu.org/de/blog/2019/running-a-guix-xfce-desktop-on-centos-7/>.
+The basic idea: Start an X11 server (provided by the host OS) on another
+virtual terminal and make this run the desktop.
+
+See comments in desktop-manifest.scm for which packages get installed and what
+combinations I already treid.
+
+
+
+Brief howto
+=================
+
+* Switch to a new virtual terminal (e.g Ctrl-Alt-F2) and login there
+  (maybe this is not necessary, but I was not able to start a new X11 server
+  from within my running X session)
+
+* cd here
+* Adjust desktop-manifest.scm
+* Adjust .xinitrc
+
+* Run ./00-setup.sh
+
+  This script will set this directory as your HOME, create a Guix profile
+  containing the Plasma desktop and start the X11 server with the Plasma
+  desktop on the next virtaul terminal.
+
+* check results, refine packages, adjust desktop-manifest.scm redo :-)
+
+* new X-server will get DISPLAY :1.
+  To change this, change number at the end of 00-setup.sh  and 01-setup.sh
+
+
+Files
+============
+
+00-setup.sh  - starts using a profile - might require tweaking
+01-setup.sh  - starts using an environment - unfinished
+desktop-manifest.scm - packages to install.
+             Also contains information about what I already tried.
+
+.xserverrc  - starts X server on next vt - called by xinit
+.xinitrc    - start the X clients, esp. the desktop
+              Use these scripts to be more flexible in adjusting environments
+
+xorg.conf  - unused in the Plase desktop test playground. *-setup.sh uses the
+             host OS's xinit and the host OS's xorg.conf
+
+unstrace.py  - unfinished helper to strip irrelevant information from
+ 	       the strace logs
+
+
+

99-playground/00-setup.sh

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+#!/bin/bash
+
+export HOME=$(dirname $(realpath "$0"))
+echo $HOME
+
+cd $HOME
+../pre-inst-env guix package -p ~/.desktop-profile -m ~/desktop-manifest.scm
+if [ $? != 0 ] ; then
+   exit
+fi
+
+export GUIX_PROFILE=${HOME}/.desktop-profile
+#export XDG_CONFIG_DIRS="${GUIX_PROFILE}/etc/xdg"
+#export XDG_DATA_DIRS="${GUIX_PROFILE}/share"
+
+# remove remainings from foreign distro
+export QT4DOCDIR=
+export QT5DOCDIR=
+export QTDIR5=
+export QTDIR=
+export QT_PLUGIN_PATH=
+export KDEINIT5_LIBRARY_PATH=
+unset QT4DOCDIR QT5DOCDIR QTDIR5 QTDIR QT_PLUGIN_PATH KDEINIT5_LIBRARY_PATH
+
+PATH=
+KDEINIT5_LIBRARY_PATH=
+QT_PLUGIN_PATH=
+source "${GUIX_PROFILE}/etc/profile"
+
+#export QT_LOGGING_RULES="*.debug=true"
+
+#export XDG_RUNTIME_DIR=$HOME/.run
+#mkdir -p "$XDG_RUNTIME_DIR"
+#chmod 0700 "$XDG_RUNTIME_DIR"
+
+echo PATH=$PATH
+echo XDG_DATA_DIRS=$XDG_DATA_DIRS
+echo XDG_CONFIG_DIRS=$XDG_CONFIG_DIRS
+echo QT_PLUGIN_PATH=$QT_PLUGIN_PATH
+echo KDEINIT5_LIBRARY_PATH=$KDEINIT5_LIBRARY_PATH
+echo QML2_IMPORT_PATH=$QML2_IMPORT_PATH
+
+# DISPLAY must be *first* argument to xinit after `--`, otherwise
+# xinit will assume display :0
+# Use the foreign system's xinit
+#  This will start the  X server as defined in .xserverrc and
+#  connect the clients defined in .xinitrc to it.
+#  Use these scripts (instead of passing commands here) to be more flexible
+#  in adjusting environments
+/usr/bin/xinit --  :1
+
+#pkill -9 kwin_x11 baloo

99-playground/01-setup.sh

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+#!/bin/bash
+
+if [ "$1" != "--in-environment" ] ; then
+
+    export HOME=$(realpath $(dirname "$0"))
+
+    exec ../pre-inst-env guix environment -m ~/desktop-manifest.scm \
+		    --pure \
+		    -- sh $0 --in-environment "$@"
+    exit
+fi
+
+# in environment
+shift # remove --in-environment
+
+#export QT_LOGGING_RULES="*.debug=true"
+
+#export XDG_RUNTIME_DIR=$HOME/.run
+#mkdir -p "$XDG_RUNTIME_DIR"
+#chmod 0700 "$XDG_RUNTIME_DIR"
+
+echo PATH=$PATH
+echo XDG_DATA_DIRS=$XDG_DATA_DIRS
+echo XDG_CONFIG_DIRS=$XDG_CONFIG_DIRS
+echo QT_PLUGIN_PATH=$QT_PLUGIN_PATH
+echo KDEINIT5_LIBRARY_PATH=$KDEINIT5_LIBRARY_PATH
+echo QML2_IMPORT_PATH=$QML2_IMPORT_PATH
+
+# DISPLAY must be *first* argument to xinit after `--`, otherwise
+# xinit will assume display :0
+# Use the foreign system's xinit
+#  This will start the  X server as defined in .xserverrc and
+#  connect the clients defined in .xinitrc to it.
+#  Use these scripts (instead of passing commands here) to be more flexible
+#  in adjusting environments
+/usr/bin/xinit --  :1
+
+#pkill -9 kwin_x11 baloo

99-playground/desktop-manifest.scm

@@ -0,0 +1,116 @@
+;; For comparism from
+;; https://guix.gnu.org/de/blog/2019/running-a-guix-xfce-desktop-on-centos-7/
+;;
+;; (specifications->manifest
+;;  '("xfce" "xfce4-session" "xfconf" "xfce4-battery-plugin"
+;;    "pulseaudio" "xfce4-volumed-pulse" "xfce4-notifyd"
+;;    ;; Helpful graphical programs.
+;;    "mousepad" "orage"
+;;    ;; System configuration utilities.
+;;    "xbacklight" "pavucontrol" "stow"
+;;    ;; For HTTPS access.
+;;    "nss-certs"
+;;    ;; These utilities are provided by the host, but we want the Guix versions
+;;    ;; because they are likely better integrated and up to date.
+;;    "fontconfig" "bash-completion" "gnupg" "man-db" "git"))
+
+
+;; I tried several combinations of packages to get Plasma Desktop running.
+;; Asking at the KDE "distribution" mailinglist did not give an reasonable
+;; answer.  If you have contact to the Plasma core team, maybe someone there
+;; can answer what is required to run the Plasma Desktop.
+;;
+;; In ../11-TODO-Plasma-Desktop-Service.txt you can find a collection of what
+;; "task-plasma-desktop" or "task-plasma-desktop-minimal" meta-packages install
+;; in some other distributions.
+;;
+;; Good Luck!
+
+
+(specifications->manifest
+ '("plasma-desktop"
+   "plasma-workspace"  ;; propagate?
+   "qtbase" ;; to not search Qt plugins in the host OS
+
+   ;;-- theme/visual dependencies
+   "breeze"  ; default theme
+   "breeze-icons" ;; required: default Icon theme - propagate?
+   "kirigami" "oxygen"
+   "qtquickcontrols2"  ;; required by plasma-workspace and plasme-desktop
+   "qqc2-desktop-style" "font-liberation"
+
+   ;; adding qtquickcontrols2 results in:
+   ;;;KCrash: Attempting to start /gnu/store/lif5pqmd3rk2cda9293gl386mp32zhi7-plasma-workspace-5.18.5/bin/.plasmashell-real
+   ;;;KCrash: Application '.plasmashell-real' crashing...
+
+   ;;-- shell/QML dependencies
+   "kde-cli-tools" "kded" "kwin" "setxkbmap"
+   "qtgraphicaleffects"  ;; required by plasma-workspace
+
+   ;; --- addefd by hartmut
+   ;; ksplashqml requires: qtsvg qtimageformats kimageformats
+   "qtsvg" "qtimageformats" "kimageformats"
+
+   "plasma-workspace-wallpapers" ;; dpendency of workspace already?
+   "plasma-integration"  ;; - KDEPlasmaPlatformTheme.so - propagte with breeze?
+
+   "kinit"  ;; propagate with plasma-workspace - or hardcode path?!
+   "kglobalaccel"
+   ;; kapplymousetheme
+   "libkscreen"  ;; actually required?
+   "kscreen"  ;;- branch kde-plasma - actually required?
+   "kservice" ;;- Tier 3 solution for working with .desktop files. - actually required?
+
+   ;; ---------- up to here: mini-desktop -----------------------
+
+   ;;
+   "kactivities"
+   "kactivitymanagerd"  ;; - branch kde-plasma System service to manage user's activities
+   "kdeplasma-addons" ;; - branch kde-plasma
+   ;; "khotkeys"  ;; - branch kde-plasma  - editor komponent??
+   ;; "kparts"
+   "krunner"
+
+   "kitemviews"  ;; irgendwas von da oben braucht das, ist baer nicht verbunden
+
+   ;;"baloo" "milou"  - file indexer and search plasmoid
+
+   ;; ;; ------------------
+   ;; ;; This was an attempt to install *all* KDE framework and Plasma packages
+
+   ;; "kcoreaddons" "ki18n" "karchive" "kconfig" "kdoctools"
+   ;; "kwidgetsaddons" "kwindowsystem"
+   ;; "polkit-qt"
+   ;; "kcodecs" "kauth" "kcrash" "kdbusaddons"
+   ;; "kguiaddons" "kconfigwidgets" "kitemviews" "kiconthemes" "kcompletion"
+   ;; "kservice" "sonnet"
+   ;; "attica" "breeze-icons" "kglobalaccel" "ktextwidgets" "knotifications"
+   ;; "kxmlgui"
+   ;; "kbookmarks" "kjobwidgets" "kwallet" "solid" "kio" "taglib" "kirigami"
+   ;; "kpackage" "kparts" "kinit"
+   ;; "kactivities" "kdeclarative" "kidletime" "kunitconversion"
+   ;; "ksyntaxhighlighting"
+   ;; ;;"plasma-wayland-protocols"
+   ;; "kdnssd" "kitemmodels" "ktexteditor" "kwayland" "threadweaver"
+   ;; "kded" "kdesignerplugin" "kemoticons" "kfilemetadata" "knewstuff" "kpty"
+   ;; "plasma-framework"
+   ;; "baloo" "kde-frameworkintegration" "kactivities-stats" "kcmutils" "kdesu"
+   ;; "kholidays"
+   ;; "kimageformats" "knotifyconfig" "kpeople" "kplotting" "krunner"
+   ;; "kxmlrpcclient" "prison"
+   ;; "purpose" "qqc2-desktop-style" "syndication" "kjs" "kdecoration"
+   ;; "breeze" "libksysguard"
+   ;; "kuserfeedback" "kscreenlocker"
+   ;; ;;"kwayland-integration" "kwayland-server"
+   ;; "libkscreen"
+   ;; "khelpcenter" "kjsembed"
+   ;; ;;"kquickcharts"
+   ;; "kactivitymanagerd" "kwin" "milou"
+   ;; ;;"kio-extras"  <--- not yet packaged
+   ;; "qca"
+   ;; "pulseaudio-qt" "ksysguard" "powerdevil" "systemsettings"
+   ;; ;;"kaccounts-integration" " kaccounts-providers" "ksysguardqml"  ; not yet packaged
+   ;; "bluedevil" "discover" "kdeplasma-addons"
+   ;; "khotkeys"
+   ;; ;;"kinfocenter" -- application
+   ))

99-playground/unstrace.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+
+import re, os
+
+def split_args(args):
+    a = args.split('"', 1)[1]
+    a = a.split('"')[0]
+    return a
+
+
+cmd_map = {
+    "statx": "stat",
+    "lstat": "stat",
+    "openat": "open",
+    "access": "stat",
+}
+
+seen = set()
+
+def stage1(cmds):
+    last_cmd, last_path, last_rc = None, None, None
+    for cmd, path, rc in cmds:
+        if (cmd, path, rc) in seen:
+            continue
+        seen.add((cmd, path, rc))
+        if (last_cmd == "open" and last_rc == False and
+            cmd == "stat" and rc == False and
+            os.path.dirname(last_path) == path):
+            # stat on dir after trying to access file
+            last_path = path
+            continue
+        if rc == last_rc:
+            # unchanged status
+            if path == last_path:
+                last_cmd, last_path, last_rc = cmd, path, rc
+            elif path.startswith(path):
+                last_path = path
+                last_cmd, last_path, last_rc = cmd, path, rc
+            else:
+                last_cmd, last_path, last_rc = cmd, path, rc
+                yield(cmd, path, rc)
+        else:
+            last_cmd, last_path, last_rc = cmd, path, rc
+            yield(cmd, path, rc)
+
+LIB_SEARCH = 1
+PLUGIN_SEARCH = 2
+
+def stage2(cmds):
+    last_cmd, last_path, last_rc = None, None, None
+    state = None
+    for cmd, path, rc in cmds:
+        #breakpoint()
+        if (state == LIB_SEARCH):
+            if rc == True:
+                # found
+                searched_dirs = []
+                yield cmd, path, rc
+                continue
+            elif os.path.basename(path) == last_path:
+                # still seeking
+                searched_dirs.append(os.path.dirname(path))
+                continue
+            else:
+                #breakpoint()
+                # next library
+                for p in searched_dirs:
+                    yield cmd, last_path + " " + p, False
+                searched_dirs = []
+
+        if (cmd == "open" and rc == False and
+            re.search(r'\.so(\.[0-9]+)?', path)):
+            # library, access failed here
+            state = LIB_SEARCH
+            searched_dirs = [os.path.dirname(path)]
+            last_path = os.path.basename(path)
+        else:
+            yield cmd, path, rc
+
+
+def strip_store_names(cmds):
+    import pathlib
+    HOME = str(pathlib.Path.home())
+    PWD = str(pathlib.Path.cwd())
+    pwd_first = len(PWD) > len(HOME)
+    for cmd, path, result in cmds:
+        if path.startswith("/gnu/store/"):
+            path = "/gnu/store/…" + path[43:]
+        elif pwd_first and path.startswith(PWD):
+            path = "$PWD" + path[len(PWD):]
+        elif path.startswith(HOME):
+            path = "~" + path[len(HOME):]
+        elif path.startswith(PWD):
+            path = "$PWD" + path[len(PWD):]
+        yield cmd, path, result
+
+
+def main(filename):
+    with open(filename) as fh:
+        lines = fh.readlines()
+    matches = (re.match(r"^(\w+)\(([^)]+)\) = (\S+).*", l)
+               for l in lines)
+    cmds = (m.groups() for m in matches if m)
+    cmds = ((cmd_map.get(cmd, cmd), split_args(path), int(result) >= 0)
+            for cmd, path, result in cmds
+            if not "/share/locale/" in path)
+    cmds = strip_store_names(cmds)
+    cmds = stage1(cmds)
+    cmds = stage2(cmds)
+    for cmd, path, rc in cmds:
+        print(cmd, path, "" if rc else "***")
+
+
+
+import argparse
+parser = argparse.ArgumentParser()
+parser.add_argument("filename")
+args = parser.parse_args()
+main(args.filename)

99-playground/xorg.conf

@@ -0,0 +1,54 @@
+#################
+#################
+#################   This file is unused in the Plase desktop
+#################   test playground.
+#################
+#################
+
+
+
+# **********************************************************************
+# Refer to the xorg.conf man page for details about the format of
+# this file.
+# **********************************************************************
+
+Section "ServerFlags"
+    #DontZoom # disable <Ctrl><Alt><KP_+>/<KP_-> (resolution switching)
+    #Option "DontZap" "False" # disable <Ctrl><Alt><BS> (server abort)
+    AllowMouseOpenFail # allows the server to start up even if the mouse does not work
+EndSection
+
+Section "Module"
+    #Load "v4l" # Video for Linux
+EndSection
+
+Section "Monitor"
+    Identifier "monitor1"
+    VendorName "Plug'n Play"
+
+    # TV fullscreen mode or DVD fullscreen output.
+    # 768x576 @ 79 Hz, 50 kHz hsync
+    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
+
+    # 768x576 @ 100 Hz, 61.6 kHz hsync
+    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
+EndSection
+
+Section "Device"
+    Identifier "device1"
+    VendorName "Intel Corporation"
+    BoardName "Intel 810 and later"
+    #Driver "intel"
+    Option "DPMS"
+EndSection
+
+Section "Screen"
+    Identifier "screen1"
+    Device "device1"
+    Monitor "monitor1"
+EndSection
+
+Section "ServerLayout"
+    Identifier "layout1"
+    Screen "screen1"
+EndSection