diff --git a/rc.local/gitprompt.sh b/rc.local/gitprompt.sh
index 45e090c..a77571b 100644
--- a/rc.local/gitprompt.sh
+++ b/rc.local/gitprompt.sh
@@ -1,3 +1,3 @@
-GIT_PROMPT_INIT="$HOME/.bash-git-prompt/gitprompt.sh"
-GIT_PROMPT_ONLY_IN_REPO=1
+nop ${GIT_PROMPT_INIT:="$HOME/.bash-git-prompt/gitprompt.sh"}
+nop ${GIT_PROMPT_ONLY_IN_REPO:=1}
 source_try "$GIT_PROMPT_INIT"
diff --git a/rc.local/golang.sh.bak b/rc.local/golang.sh.bak
index c382855..60b0faa 100644
--- a/rc.local/golang.sh.bak
+++ b/rc.local/golang.sh.bak
@@ -1,2 +1,4 @@
-prepend_path "$HOME/go/bin"
-export GOROOT=$(go env GOROOT)
+prepend_path_try "$HOME/go/bin"
+if can_run go; then
+  export GOROOT=$(go env GOROOT)
+fi
diff --git a/rc.local/linuxbrew.sh b/rc.local/linuxbrew.sh
index e4a0f44..3aa20c7 100644
--- a/rc.local/linuxbrew.sh
+++ b/rc.local/linuxbrew.sh
@@ -1,7 +1,7 @@
-BREW_HOME=/home/linuxbrew
-BREW="$BREW_HOME/.linuxbrew/bin/brew"
+nop ${BREW_HOME:=/home/linuxbrew}
+nop ${BREW:="$BREW_HOME/.linuxbrew/bin/brew"}
 
-if [[ -e $BREW ]]; then
+if [[ -e "$BREW" ]]; then
   eval "$($BREW shellenv)"
 fi
 
diff --git a/rc.local/sdkman.sh b/rc.local/sdkman.sh
index 218a7d5..8d7e1ba 100644
--- a/rc.local/sdkman.sh
+++ b/rc.local/sdkman.sh
@@ -1,2 +1,3 @@
-export SDKMAN_DIR="/home/lachtan/.sdkman"
+nop "${SDKMAN_DIR:=$HOME/.sdkman}"
+export SDKMAN_DIR
 source_try "$SDKMAN_DIR/bin/sdkman-init.sh"
diff --git a/rc.local/wsl.sh b/rc.local/wsl.sh
index cc75082..bf94add 100644
--- a/rc.local/wsl.sh
+++ b/rc.local/wsl.sh
@@ -1,3 +1,3 @@
-prepend_path "$HOME/.local/bin"
-append_path "$HOME/.arkade/bin"
-append_path "$HOME/.cargo/bin"
+prepend_path_try "$HOME/.local/bin"
+append_path_try "$HOME/.arkade/bin"
+append_path_try "$HOME/.cargo/bin"