X-Git-Url: https://git.sev.monster/~sev/dotfiles.git/blobdiff_plain/294ed44e1a8dd7a6026213380c41bceb1a4a162a..dd6dcbd457b22b4d7398329c1d2457781b3d8de4:/etc/zsh/.zshenv?ds=sidebyside

diff --git a/etc/zsh/.zshenv b/etc/zsh/.zshenv
index 1bcc1f8..69ac9bc 100644
--- a/etc/zsh/.zshenv
+++ b/etc/zsh/.zshenv
@@ -51,19 +51,24 @@ function _sev_zcleanup {
 }
 
 function _sev_setpath {
-    # NOTE: we utilize the fact that unique arrays keep the first occurrence and
-    #       remove any further occurences to capture elements from the old PATH
-    #       that we did not anticipate and shift them to the front, since they are
-    #       probably important to the system
-    # NOTE: tied arrays path and fpath already exist
-    typeset -gU path fpath
     # add as many generic paths as possible to keep the order we want
-    # NOTE: /usr/{local,pkg,games} are unix/bsdisms
-    # XXX: PREFIX not validated, non-posix but Termux uses it, maybe others
+    # NOTE: tied arrays path and fpath already exist, but are not unique (-U);
+    #       we utilize the fact that unique arrays keep the first occurrence
+    #       and remove any further occurences to check for elements from the
+    #       old PATH that we did not anticipate and shift them to the front,
+    #       since they are probably important to the system
+    typeset -gU path fpath
+    local -a syspath=("$path[@]")
+    # NOTE: /usr/{pkg,games} are unix/bsdisms
+    # NOTE: some systems (esp. research machines) may have multiple versions of
+    #       packages installed in /opt/[pkg]/[ver]/bin or other dirs, managed
+    #       with something like Environment Modules. this code does not account
+    #       for this type of usage and will add all valid paths. any undesired
+    #       paths can be removed using .zshenv.local.
+    # XXX: PREFIX not validated, non-POSIX but Termux uses it, maybe others
     # XXX: XDG specifies ~/.local/bin as the only user-writable dir for
     #      executables, but we specify more; technically this is against spec
-    local -a syspath=("$path[@]")
-    path=({{${_sev_home:-~},~}{/.local,},{$PREFIX,}{,/opt,/opt/*{/*,},/usr{,/local,/pkg}}}/{s,}bin(N)
+    path=({{${_sev_home:-~},~}{/.local,},{$PREFIX,}{,/usr{,/local,/pkg},/opt{,/*{/*,}}}}/{s,}bin(N)
           {$PREFIX,}/usr/{X11R{7,6}/bin,games}
           # emulate Arch Linux flatpak-bindir.sh for use on other systems
           {${XDG_DATA_HOME:-~/.local/share},{$PREFIX,}/var/lib}/flatpak/exports/bin)
@@ -92,6 +97,7 @@ function _sev_setpath {
     }
     # FPATH is not exported by default
     export FPATH
+    # un-unique system arrays for consistency
     typeset +U path fpath
 }
 
@@ -148,10 +154,13 @@ if [[ ! -v _sev_setup_path || -o login ]] {
 #       the toplevel shell has already logged out and the dirs removed, but the
 #       chances of that are slim.
 if [[ ! -v _sev_tmp ]] {
+    _sev_tmp=~/.local/tmp
     # create personal TMPDIR under system tmp
-    t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-$LOGNAME
+    # NOTE: under proot with uid remapping, we can reuse old tmp, without
+    #       worrying about permission issues; intended for proot under termux.
+    # XXX: _sev_proot_old_user only works if /tmp is shared!
+    t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-${_sev_proot_old_username:-$LOGNAME}
     [[ -e $t ]] || mkdir -m700 $t 2>/dev/null
-    _sev_tmp=~/.local/tmp
     if [[ ! -d $t ]] {
         # fallback TMPDIR to bare local directory or existing softlink
         [[ -o interactive ]] &&
@@ -163,33 +172,34 @@ if [[ ! -v _sev_tmp ]] {
             [[ -o interactive ]] &&
               print -P "%F{red}!!! Can't create tmp dir, using $_sev_tmp%f"
         }
-    } elif [[ -f $_sev_tmp || ( -d $_sev_tmp && ! -h $_sev_tmp ) ]] {
-        # file or non-softlink directory is on our local dir
+    } elif [[ -e $_sev_tmp && ! -h $_sev_tmp ]] {
+        # non-softlink node is on our local dir
         [[ -o interactive ]] &&
           print -P "%F{orange}*** $_sev_tmp exists, can't link to tmp dir $t, ignoring it%f"
         _sev_tmp=$t
     } else {
-        # link local dir to tmp dir
-        if [[ -h $_sev_tmp && $_sev_tmp:P != $t:P ]] {
-            [[ -o interactive ]] &&
+        if [[ -h $_sev_tmp ]] {
+            [[ -o interactive && $_sev_tmp:P != $t:P ]] &&
               print -P "%F{orange}*** $_sev_tmp links to ${_sev_tmp:P} and not ${t:P}, unlinking it%f"
-            # XXX: race condition for existing sessions still using this dir
+            # NOTE: ln -f doesn't seem to work reliably with softlink
+            #       directories, so explicitly remove the target if it exists
+            # XXX: potential race condition
+            # 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 $_sev_tmp 2>/dev/null
     }
-    if [[ -v _sev_tmp ]] {
-        # ensure dir is clean
-        _sev_zcleanup tmp
-        # finally create our subdir for this session
-        t=$_sev_tmp/.session.$$
-        if ! mkdir -m700 $t 2>/dev/null; then
-            [[ -o interactive ]] &&
-              print -P "%F{red}!!! Can't create session tmp subdir $t, using $_sev_tmp%f"
-            t=$_sev_tmp
-        fi
-        export _sev_tmp TMPDIR=$t TEMPDIR=$t TEMP=$t TMP=$t TMPPREFIX=$t/zsh
-    }
+    # ensure dir is clean
+    _sev_zcleanup tmp
+    # finally create our subdir for this session
+    t=$_sev_tmp/.session.$$
+    if ! mkdir -m700 $t 2>/dev/null; then
+        [[ -o interactive ]] &&
+          print -P "%F{red}!!! Can't create session tmp subdir $t, using $_sev_tmp%f"
+        t=$_sev_tmp
+    fi
+    export _sev_tmp TMPDIR=$t TEMPDIR=$t TEMP=$t TMP=$t TMPPREFIX=$t/zsh
     unset t
 }
 
@@ -205,56 +215,47 @@ if [[ ! -v _sev_setup_xdg ]] {
     # include any of the below dirs there, but you never know what crazy shit
     # people will do. I rather handle them sanely with our own code than let
     # them override after the fact.
-    [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
+    [[ -f $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
       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
@@ -263,8 +264,9 @@ 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=
 }
@@ -286,6 +288,12 @@ if [[ ! -v GNUPGHOME ]] {
   eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
               -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
 
+## go
+if [[ -v commands[go] ]] {
+    [[ ! -v GOPATH ]] && export GOPATH=${XDG_DATA_HOME:-~/.local/share}/go:~/go
+    [[ ! -v GOBIN  ]] && export GOBIN=~/.local/bin
+}
+
 ### load zshenv site-specific
 autoload -Uz load-site-dotfile
 load-site-dotfile zshenv