X-Git-Url: https://git.sev.monster/~sev/dotfiles.git/blobdiff_plain/96b7dae3dfbd3c122985869739961d87c976204f..b778cd412e7fb63099c506e3948f011e4d169dff:/etc/zsh/.zshenv

diff --git a/etc/zsh/.zshenv b/etc/zsh/.zshenv
index f1e6a55..8bf4cbe 100644
--- a/etc/zsh/.zshenv
+++ b/etc/zsh/.zshenv
@@ -86,7 +86,7 @@ function _sev_setpath {
     # shift valid system paths to the front if there are any left
     ((len > 0 && len < $#path)) && path=("${(@)path[len + 1, -1]}" "${(@)path[1, len]}")
     # include our zsh dir in fpath. unlike above, we always prefer our paths
-    fpath=({${ZDOTDIR:-~/.zsh},{${_sev_home:-~},~}/.zsh}/functions/**/*(/N) "$fpath[@]")
+    fpath=({${ZDOTDIR:-{${_sev_home:-~},~}/.zsh},{${_sev_home:-~},~}/.zsh}/functions/**/*(/N) "$fpath[@]")
     # remove bad paths
     for (( i = 1; i <= $#fpath; i++ )) {
         if [[ ! -d $fpath[$i] ]] {
@@ -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
@@ -152,11 +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 $PREFIX/tmp/.X11-unix on most installs.
 if [[ ! -v _sev_tmp ]] {
     _sev_tmp=~/.local/tmp
     # create personal TMPDIR under system tmp
-    t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-$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
@@ -165,7 +170,7 @@ if [[ ! -v _sev_tmp ]] {
         [[ -h $_sev_tmp && ! -d _sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
         [[ ! -e $_sev_tmp ]] && mkdir -m700 $_sev_tmp 2>/dev/null
         if [[ ! -d $_sev_tmp ]] {
-            _sev_tmp=${$(mktemp 2>/dev/null):/tmp}
+            _sev_tmp=${$(mktemp 2>/dev/null):-/tmp}
             [[ -o interactive ]] &&
               print -P "%F{red}!!! Can't create tmp dir, using $_sev_tmp%f"
         }
@@ -175,8 +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
@@ -184,8 +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
@@ -216,52 +223,43 @@ if [[ ! -v _sev_setup_xdg ]] {
       emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
 
     typeset -UT XDG_DATA_DIRS xdg_data_dirs
-    if [[ -v XDG_DATA_HOME ]] {
-        export XDG_DATA_HOME
-    } elif [[ ! -e ~/.local/share ]] {
-        mkdir -m760 ~/.local/share
-    }
-    xdg_data_dirs=($XDG_DATA_HOME /{opt,usr/local,usr/pkg,usr}/share
-      ${XDG_DATA_DIRS:+${xdg_data_dirs%%/}})
+    [[ -v XDG_DATA_HOME ]] && export XDG_DATA_HOME
+    [[ -e ${XDG_DATA_HOME:-~/.local/share} ]] ||
+      mkdir -m760 ${XDG_DATA_HOME:-~/.local/share}
+    xdg_data_dirs=($XDG_DATA_HOME ${XDG_DATA_DIRS:+${xdg_data_dirs%%/}}
+      /{usr{,/local,/pkg},opt{,/*{/*,}}}/share(N))
+    xdg_data_dirs=($xdg_data_dirs(/N))
     export XDG_DATA_DIRS
 
     typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
-    if [[ -v XDG_CONFIG_HOME ]] {
-        export XDG_CONFIG_HOME
-    } elif [[ ! -e ~/.config ]] {
-        mkdir -m760 ~/.config
-    }
+    [[ -v XDG_CONFIG_HOME ]] && export XDG_CONFIG_HOME
+    [[ -e ${XDG_CONFIG_HOME:-~/.config} ]] ||
+      mkdir -m760 ${XDG_CONFIG_HOME:-~/.config}
     # I am of the belief .local should follow FHS /usr/local...
-    [[ -e ~/.local/etc ]] || ln -s ~/.config ~/.local/etc
-    xdg_config_dirs=($XDG_CONFIG_HOME
-      ${XDG_CONFIG_DIRS:+${xdg_config_dirs%%/}}
-      {/opt,/usr/local,/usr/pkg,}/etc/xdg)
+    [[ -e ~/.local/etc ]] || ln -s ${XDG_CONFIG_HOME:-~/.config} ~/.local/etc
+    xdg_config_dirs=($XDG_CONFIG_HOME ${XDG_CONFIG_DIRS:+${xdg_config_dirs%%/}}
+      {,/usr{,/local,/pkg},opt{,/*{/*,}}}/etc/xdg(N))
+    xdg_config_dirs=($xdg_config_dirs(/N))
     export XDG_CONFIG_DIRS
 
-    if [[ -v XDG_STATE_HOME ]] {
-        export XDG_STATE_HOME
-    } elif [[ ! -e ~/.local/state ]] {
-        mkdir -m760 ~/.local/state
-    }
+    [[ -v XDG_STATE_HOME ]] && export XDG_STATE_HOME
+    [[ -e ${XDG_STATE_HOME:-~/.local/state} ]] ||
+      mkdir -m760 ${XDG_STATE_HOME:-~/.local/state}
 
     if [[ -v XDG_CACHE_HOME ]] {
         export XDG_CACHE_HOME
     } else {
-        if [[ -v _sev_tmp ]] {
-            export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
-            [[ -e $XDG_CACHE_HOME ]] || mkdir -m700 $XDG_CACHE_HOME
-        } elif [[ ! -e ~/.cache ]] {
-            mkdir -m700 ~/.cache
-        }
+        export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
     }
+    [[ -e ${XDG_CACHE_HOME:-~/.cache} ]] ||
+      mkdir -m700 ${XDG_CACHE_HOME:-~/.cache}
 
+    # NOTE: this can be set by systemd or other pre-shell supervisor, and if
+    #       any services were started such as pipewire, we need to use the
+    #       existing runtime dir to preserve runtime state
     if [[ -v XDG_RUNTIME_DIR ]] {
-        # NOTE: this can be set by systemd or other pre-shell supervisor, and
-        #       if any services were started such as pipewire, we need to use
-        #       the existing runtime dir so that we can get any existing
-        #       program sockets or other data
         export XDG_RUNTIME_DIR
-    } elif [[ -v TMPDIR ]] {
+    } else {
         # make runtime dir in our session-specific tmpdir
         export XDG_RUNTIME_DIR=$TMPDIR/.xdg.runtime
         # same as in tmpdir creation, ensure dir doesn't exist
@@ -270,8 +268,9 @@ if [[ ! -v _sev_setup_xdg ]] {
         } elif [[ -e $XDG_RUNTIME_DIR ]] {
             rm -rf $XDG_RUNTIME_DIR 2>/dev/null
         }
-        mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
     }
+    [[ ! -e $XDG_RUNTIME_DIR ]] &&
+      mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
 
     export _sev_setup_xdg=
 }
@@ -289,9 +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] ]] {