From 5057ab890b913f64f40e5800150c3bf47b7677a8 Mon Sep 17 00:00:00 2001
From: David Tomaschik <david@systemoverlord.com>
Date: Mon, 9 Jun 2025 13:21:50 -0700
Subject: [PATCH] Async completion support

---
 dotfiles/zshrc                   |  4 ++++
 dotfiles/zshrc.d/completions.zsh | 13 +++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 dotfiles/zshrc.d/completions.zsh

diff --git a/dotfiles/zshrc b/dotfiles/zshrc
index 9105641..b182223 100755
--- a/dotfiles/zshrc
+++ b/dotfiles/zshrc
@@ -130,6 +130,10 @@ source_first_existing() {
   return 1
 }
 
+have_command() {
+  command -v "${1}" &>/dev/null
+}
+
 # Source extras and aliases if interactive
 if [[ $- == *i* ]] ; then
   source_if_existing $HOME/.aliases
diff --git a/dotfiles/zshrc.d/completions.zsh b/dotfiles/zshrc.d/completions.zsh
new file mode 100644
index 0000000..f757a25
--- /dev/null
+++ b/dotfiles/zshrc.d/completions.zsh
@@ -0,0 +1,13 @@
+# Build some completions if they don't exist
+# We run in the background to reduce shell startup time
+{
+  COMPDIR=${HOME}/.zshrc.completions
+  function missing_comp() {
+    test ! -f "$COMPDIR/$1"
+  }
+
+  have_command rustup && {
+    missing_comp _rustup && rustup completions zsh > $COMPDIR/_rustup
+    missing_comp _cargo && rustup completions zsh cargo > $COMPDIR/_cargo
+  } || true
+} &>/dev/null &!