Fix sh loader

sh/.zshrc

@@ -1,8 +1,8 @@
-TOOLKIT=/etc/toolkit
+source /etc/toolkit/sh/load.sh
+
 ZSH=$TOOLKIT/sh/ohmyzsh
 ZSH_CUSTOM=$ZSH/custom
 ZSH_THEME="bira"
-TOOLKIT=/etc/toolkit
 
 zstyle ':omz:update' mode auto      # update automatically without asking
 zstyle ':omz:update' frequency 14
@@ -19,4 +19,3 @@ if [[ ! -d $ZSH_CACHE_DIR ]]; then
 fi
 
 source $ZSH/oh-my-zsh.sh
-source $TOOLKIT/sh/load.sh

sh/custom/aliases.sh

@@ -1,5 +1,5 @@
-ALIASES='/usr/share/zsh/custom/aliases.sh'
-VARS='/usr/share/zsh/custom/vars.sh'
+ALIASES=${TOOLKIT}/sh/custom/aliases.sh
+VARS=${TOOLKIT}/sh/custom/vars.sh
 
 alias grep='grep --color=auto'
 alias fgrep='fgrep --color=auto'

sh/load.sh

@@ -1,4 +1,6 @@
-# Sources necessary shell scripts
-if [ -d "./custom" ]; then
-    source ./custom/*.sh
-fi
+TOOLKIT=/etc/toolkit
+
+# Sources custom shell scripts
+for sh in ${TOOLKIT}/sh/custom/*.sh; do
+    test -r "$sh" && . "$sh"
+done