crea shenvs, añade infrastructura para paquetes

home/zshrc.nix

@@ -76,7 +76,6 @@
   alias x='killall --ignore-case --user=$(whoami) --interactive'
   alias sc='${maim}/bin/maim -s -u | xclip -selection clipboard -t image/png -i'
   alias tree='tree -CF'
-  alias spawn="xdg-open"
   alias lock="betterlockscreen -l"
   alias nightmode="${redshift}/bin/redshift -P -O 1000"
   alias lightmode="${redshift}/bin/redshift -P -O 6500"
@@ -85,7 +84,22 @@
   bindkey ";5D" backward-word
   bindkey ";5C" forward-word
   bindkey "\e[3~" delete-char
-  
+
+
+  function shenv() {
+    nix shell 'system#shenvs.'"$1"
+  }
+
+  function spawn () {
+    if [ ! -x "$(command -v $1)" ]
+      then
+         echo "spawn: no such program: $1" >&2
+         return 1
+     fi
+     $@ > /dev/null 0>&1 2>&1 &
+     disown
+  }
+
   autoload -Uz up-line-or-beginning-search
   zle -N up-line-or-beginning-search
   autoload -Uz down-line-or-beginning-search