X-Git-Url: https://git.sev.monster/~sev/dotfiles.git/blobdiff_plain/e71b6dc41aa02d657eff4439c7ce94c21f313f71..4fa653d992e741dd96b3c58a265b2fb71cd8b0b7:/etc/zsh/.zshenv

diff --git a/etc/zsh/.zshenv b/etc/zsh/.zshenv
index 3c53c99..8bf4cbe 100644
--- a/etc/zsh/.zshenv
+++ b/etc/zsh/.zshenv
@@ -127,21 +127,23 @@ if [[ ! -v _sev_setup_path || -o login ]] {
     # NOTE: do not set _sev_setup_path, it is set in zprofile
 }
 
-### home dir setup & exports
+### home dir setup & additional exports
 # XXX: traditionally, zshenv should just contain exports, and not touch the
-#      filesystem. however, some system profile scripts that are sourced in the
-#      system zprofile may attempt to do things that rely on some of these
-#      vars. for example, `flatpak-bindir.sh` in the Arch Linux flatpak package
-#      references $XDG_DATA_HOME with no fallback. since we do special handling
-#      for these vars before we export them, we're forced to do it all here
-#      instead of zprofile.
+#      filesystem. however, our TMPDIR and XDG vars rely on mutable user paths
+#      that may not exist, and as such need to be set up before the rest of the
+#      system can use them. this is important as some environments include code
+#      in the global zprofile, or source scripts of other shells in the global
+#      zprofile, that may rely on our desired dir structure and vars pointing
+#      to it. for example, `flatpak-bindir.sh` in the Arch Linux flatpak
+#      package references $XDG_DATA_HOME with no fallback. since we do special
+#      handling for these vars before we export them, we're forced to do it all
+#      here instead of at the top of the zprofile.
 
 ## xdg local dir
 # NOTE: need this for tmp, so confirm it exists.
-# XXX: perms are not specified for XDG dirs except runtime, but I think 760
-#      makes the most sense. shouldn't break anything since no one else should
-#      be poking around in our dir.
-[[ -e ~/.local ]] || mkdir -m760 ~/.local
+# XXX: perms are not specified for XDG dirs except runtime. 760 makes the most
+#      sense, but we need to be a bit more permissive for zsu.
+[[ -e ~/.local ]] && chmod 755 ~/.local || mkdir -pm766 ~/.local
 
 ## tmp
 # NOTE: specs say that POSIX tmp and XDG runtime directories should exist
@@ -152,14 +154,14 @@ if [[ ! -v _sev_setup_path || -o login ]] {
 #       though it is not expressly spec compliant. this may also cause problems
 #       with disowned applications that still try to use the directories after
 #       the toplevel shell has already logged out and the dirs removed, but the
-#       chances of that are slim.
+#       chances of that are slim. this also needs to be adjusted for usermode
+#       Xorg, as it requires $PREFIX/tmp/.X11-unix on most installs.
 if [[ ! -v _sev_tmp ]] {
     _sev_tmp=~/.local/tmp
     # create personal TMPDIR under system tmp
-    # NOTE: under proot with uid remapping, we can reuse old tmp, without
-    #       worrying about permission issues; intended for proot under termux.
-    # XXX: _sev_proot_old_user only works if /tmp is shared!
-    t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-${_sev_proot_old_username:-$LOGNAME}
+    # NOTE: under proot with uid remapping and shared /tmp, we can reuse old
+    #       dir, without worrying about permission issues; intended for termux.
+    t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-${_sev_proot_real_user:-$LOGNAME}
     [[ -e $t ]] || mkdir -m700 $t 2>/dev/null
     if [[ ! -d $t ]] {
         # fallback TMPDIR to bare local directory or existing softlink
@@ -178,8 +180,8 @@ if [[ ! -v _sev_tmp ]] {
           print -P "%F{orange}*** $_sev_tmp exists, can't link to tmp dir $t, ignoring it%f"
         _sev_tmp=$t
     } else {
-        if [[ -h $_sev_tmp ]] {
-            [[ -o interactive && $_sev_tmp:P != $t:P ]] &&
+        if [[ ! -v $_sev_tmp_keep_link && -h $_sev_tmp && $_sev_tmp:P != $t:P ]] {
+            [[ -o interactive ]] &&
               print -P "%F{orange}*** $_sev_tmp links to ${_sev_tmp:P} and not ${t:P}, unlinking it%f"
             # NOTE: ln -f doesn't seem to work reliably with softlink
             #       directories, so explicitly remove the target if it exists
@@ -187,8 +189,10 @@ if [[ ! -v _sev_tmp ]] {
             # TODO: handle cleanup of old dir if it doesn't match?
             unlink $_sev_tmp 2>/dev/null
         }
-        # link local dir to tmp dir
-        ln -s $t $_sev_tmp 2>/dev/null
+        if [[ ! -e $_sev_tmp ]] {
+            # link local dir to tmp dir
+            ln -s $t $_sev_tmp 2>/dev/null
+        }
     }
     # ensure dir is clean
     _sev_zcleanup tmp
@@ -284,9 +288,9 @@ if [[ ! -v GNUPGHOME ]] {
 
 ## perl local lib
 [[ ! -v PERL_LOCAL_LIB_ROOT && -v commands[perl] &&
-   -d $XDG_DATA_HOME/perl5/lib/perl5 ]] &&
-  eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
-              -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
+   -d ${XDG_DATA_HOME:-~/.local/share}/perl5/lib/perl5 ]] &&
+  eval $(perl -I${XDG_DATA_HOME:-~/.local/share}/perl5/lib/perl5 \
+              -Mlocal::lib=${XDG_DATA_HOME:-~/.local/share}/perl5 2>/dev/null)
 
 ## go
 if [[ -v commands[go] ]] {