moved the generation of local environment variables to its own generator script

.local/bin/autostart.example

@@ -1,5 +1,4 @@
 #! /bin/sh
-[ -r $HOME/.fehbg ] && . $HOME/.fehbg
 start-pulseaudio-x11
 compton -b
-echo "Started on `date -Iseconds`" > $HOME/log
+[ -r "$HOME"/.fehbg ] && . "$HOME"/.fehbg

.local/bin/generate-env

@@ -0,0 +1,21 @@
+#! /bin/sh
+if [ -d /usr/lib/systemd/system-environment-generators ];
+then
+	run-parts /usr/lib/systemd/user-environment-generators
+else
+	cat "$HOME"/.config/environment.d/*
+fi | grep -v '#' | grep -v '^[[:space:]]*$' | while read -r cur_env; do export "${cur_env?}"; done
+
+command -v ip >/dev/null 2>&1 &&
+{
+	LOCAL_IP="$(ip route | sed -En '/.*linkdown/! s/.*src\s+([^ ]+)\s*/\1/p')"
+
+	export LOCAL_IP
+	TARGET_FILE="$(readlink -f "${XDG_RUNTIME_DIR:-${TMPDIR:-$HOME}}")/local_ip"
+	[ ! -r "$TARGET_FILE" ] && echo "$LOCAL_IP" > "$TARGET_FILE"
+}
+
+# Make sure we include this part only once
+[ -n "$USER_ENVIRONMENT_GENERATORS" ] && return
+export USER_ENVIRONMENT_GENERATORS=1
+PATH="$HOME/.local/bin:$PATH"

.xsessionrc

@@ -1,8 +1 @@
-# Make sure we include this file only once
+. $HOME/.local/bin/generate-env
-if [ -z $LOCAL_BIN_ALREADY_SET ];
-then
-        export LOCAL_BIN_ALREADY_SET=1
-        # set PATH so it includes user's private bin if it exists
-        [ -d "$HOME/.local/bin" ] && PATH="$HOME/.local/bin:$PATH"
-        [ -d "$HOME/bin" ] && PATH="$HOME/bin:$PATH"
-fi

.zshrc

@@ -1,10 +1,3 @@
-if [ -d /usr/lib/systemd/system-environment-generators ];
-then
-	run-parts /usr/lib/systemd/user-environment-generators | grep -v '#' | grep -v '^ $' | while read cur_env; do export ${cur_env}; done
-else
-	cat $HOME/.config/environment.d/* | grep -v '#' | grep -v '^$' | while read cur_env; do export "${cur_env}"; done
-fi
-
 setopt HIST_EXPIRE_DUPS_FIRST
 setopt HIST_IGNORE_DUPS
 setopt HIST_IGNORE_ALL_DUPS
@@ -41,6 +34,8 @@ EOBUNDLES
 antigen theme gallifrey
 antigen apply
 
+source "$HOME/.local/bin/generate-env"
+
 hash direnv &> /dev/null && eval "$(direnv hook zsh)"
 chpwd() { exa }
 ZSH_AUTOSUGGEST_STRATEGY=match_prev_cmd