diff --git a/common.sh b/common.sh
new file mode 100644
index 0000000..162f556
--- /dev/null
+++ b/common.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+# Should not be executable, only sourced by other scripts
+
+command_exists() { command -v ${1} >/dev/null; }
diff --git a/dot_config/i3/config b/dot_config/i3/config
index fafcf9a..f82f72c 100644
--- a/dot_config/i3/config
+++ b/dot_config/i3/config
@@ -21,7 +21,7 @@ font pango:Roboto Mono for Powerline 11
 #font pango:DejaVu Sans Mono 8
 
 # KEYBOARD SHORTCUTS
-bindsym $mod+l exec i3lock-fancy
+bindsym $mod+F1 exec i3lock-fancy
 bindsym Print exec $HOME/.local/scripts/screenshot.sh select
 bindsym ctrl+Print exec $HOME/.local/scripts/screenshot.sh fullscreen
 bindsym $mod+p exec $HOME/.local/scripts/passmenu.sh
diff --git a/run_once_01_cargo_bins.sh b/run_once_01_cargo_bins.sh
index 743f103..c3379f9 100755
--- a/run_once_01_cargo_bins.sh
+++ b/run_once_01_cargo_bins.sh
@@ -1,18 +1,21 @@
 #!/bin/bash
 
-cargo install \
-    bat \
-    cargo-edit \
-    cargo-expand \
-    cargo-tree \
-    cargo-update \
-    cargo-watch \
-    fd-find \
-    hexyl \
-    just \
-    ripgrep \
-    tectonic \
-    tokei \
-    topgrade \
+source $(dirname "$0")/common.sh
+
+command_exists cargo && \
+    cargo install \
+        bat \
+        cargo-edit \
+        cargo-expand \
+        cargo-tree \
+        cargo-update \
+        cargo-watch \
+        fd-find \
+        hexyl \
+        just \
+        ripgrep \
+        tectonic \
+        tokei \
+        topgrade \
     ;