zsh: rework ZDOTDIR redirection

.config/dotfiles/gitignore

@@ -2,7 +2,6 @@
 !/.cache/zsh/compcache/.keep
 !/.cache/zsh/completion/.keep
 !/.cache/zsh/compzwc/.keep
-!/.cache/zsh/dots/.keep
 !/.config/dotfiles/bin/.keep
 !/.config/dotfiles/gen-gitignore.sh
 !/.config/dotfiles/gitattributes
@@ -12,6 +11,7 @@
 !/.config/dotfiles/woodpecker.yml
 !/.config/htop/htoprc.dist
 !/.config/mc/ini.dist
+!/.config/zsh.dots/.zshenv
 !/.config/zsh/_.zsh
 !/.config/zsh/_wip/enclave.zsh.wip
 !/.config/zsh/_wip/starship.zsh.sample

.config/zsh.dots/.zshenv

@@ -0,0 +1,6 @@
+#!/bin/zsh
+if [[ -o interactive ]] ; then
+    ## early redirect
+    ZDOTDIR="${ZDOTDIR%/${ZDOTDIR:t2}}"
+    source "${ZDOTDIR}/.zshenv"
+fi

.config/zsh/_.zsh

@@ -18,7 +18,7 @@ unsetopt global_rcs
 
 ## safety measure:
 ## redirect all following activity within ZDOTDIR to cache
-export ZDOTDIR="${ZSHU[d_cache]}/dots"
+export ZDOTDIR="${ZDOTDIR}/.config/zsh.dots"
 
 ## cleanup: start from scratch
 for i ( a s f d ) ; do unhash -$i -m '*' ; done ; unset i

.config/zsh/lib/selfservice.zsh

@@ -63,6 +63,7 @@ z-reload() {
 ## reload or new session are required to regenerate compcache
 z-cache-flush() {
     find "${ZSHU[d_cache]}/" -xdev -type f '!' -name '.keep' -delete
+    find "${ZSHU[d_zdot]}/.config/zsh.dots/" -xdev -type f '!' -name '.zshenv' -delete
     z-zwc-flush
     z-zwc-gen
 }

.zshenv

@@ -2,6 +2,5 @@
 if [[ -o interactive ]] ; then
     ## early redirect
     : "${ZDOTDIR:=${HOME}}"
-    [ "${ZDOTDIR}" = "${HOME}/.cache/zsh/dots" ] && ZDOTDIR="${HOME}"
     source "${ZDOTDIR}/.config/zsh/_.zsh"
 fi