[Build] Start refactor

configs/system/environment

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+#
+# This file is parsed by pam_env module
+#
+# Syntax: simple "KEY=VAL" pairs on separate lines
+#
+
+QT_QPA_PLATFORMTHEME=gtk3
+QT_QPA_PLATFORM=wayland
+GTK_THEME=Adaptive-Theme
+# GTK_THEME=Material-Black-Blueberry
+# QT_STYLE_OVERRIDE=kvantum
+GCM_CREDENTIAL_STORE=secretservice
+VKD3D_CONFIG=dxr11,dxr
+RADV_PERFTEST_RT=1
+ANDROID_HOME=/home/janis/Android/Sdk
+EDITOR=nvim
+PAGER=nvimpager
+MANPAGER=nvimpager