Add tooling cache and install neofetch, difftastic, and Neovim in containers

src/vm.ts

@@ -47,9 +47,12 @@ async function createContainer(home: string): Promise<void> {
 }
 
 /** Install base system packages (as root). */
-async function installPackages(): Promise<void> {
+async function installPackages(cached: boolean): Promise<void> {
+  const packages = cached
+    ? "curl git fish"
+    : "curl git fish unzip"
   await run(
-    $`container exec ${CONTAINER_NAME} bash -c ${"apt update && apt install -y curl git neofetch fish unzip"}`,
+    $`container exec ${CONTAINER_NAME} bash -c ${`apt update && apt install -y ${packages}`}`,
     "Package installation")
 }
 
@@ -60,8 +63,25 @@ async function createHostSymlinks(home: string): Promise<void> {
     "Symlink creation")
 }
 
-/** Install Bun and Claude Code (as ubuntu user). */
-async function installTooling(log?: (msg: string) => void): Promise<void> {
+const CACHE_DIR = join(homedir(), '.sandlot', '.cache')
+
+/** Check whether the package cache is populated. */
+async function hasCachedTooling(): Promise<boolean> {
+  const files = ['bun', 'claude', 'neofetch', 'difft', 'nvim.tar.gz']
+  const checks = await Promise.all(files.map(f => Bun.file(join(CACHE_DIR, f)).exists()))
+  return checks.every(Boolean)
+}
+
+/** Install Bun, Claude Code, neofetch, and Neovim, using cached binaries when available. */
+async function installTooling(cached: boolean, log?: (msg: string) => void): Promise<void> {
+  if (cached) {
+    log?.("Installing packages (cached)")
+    await run(
+      $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"mkdir -p ~/.local/bin && cp /sandlot/.cache/bun /sandlot/.cache/claude /sandlot/.cache/neofetch /sandlot/.cache/difft ~/.local/bin/ && chmod +x ~/.local/bin/bun ~/.local/bin/claude ~/.local/bin/neofetch ~/.local/bin/difft && ln -sf bun ~/.local/bin/bunx && tar xzf /sandlot/.cache/nvim.tar.gz -C ~/.local --strip-components=1"}`,
+      "Install from cache")
+    return
+  }
+
   log?.("Installing Bun")
   await run(
     $`container exec --user ${USER} ${CONTAINER_NAME} env BUN_INSTALL=/home/${USER}/.local bash -c ${"curl -fsSL https://bun.sh/install | bash"}`,
@@ -71,6 +91,25 @@ async function installTooling(log?: (msg: string) => void): Promise<void> {
   await run(
     $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"curl -fsSL https://claude.ai/install.sh | bash"}`,
     "Claude Code installation")
+
+  log?.("Installing neofetch")
+  await run(
+    $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"curl -fsSL https://raw.githubusercontent.com/dylanaraps/neofetch/master/neofetch -o ~/.local/bin/neofetch && chmod +x ~/.local/bin/neofetch"}`,
+    "neofetch installation")
+
+  log?.("Installing difftastic")
+  await $`mkdir -p ${CACHE_DIR}`.quiet()
+  await run(
+    $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"curl -fsSL https://github.com/Wilfred/difftastic/releases/latest/download/difft-aarch64-unknown-linux-gnu.tar.gz | tar xz -C ~/.local/bin"}`,
+    "difftastic installation")
+
+  log?.("Installing Neovim")
+  await run(
+    $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"curl -fsSL https://github.com/neovim/neovim/releases/latest/download/nvim-linux-arm64.tar.gz -o /sandlot/.cache/nvim.tar.gz && tar xzf /sandlot/.cache/nvim.tar.gz -C ~/.local --strip-components=1"}`,
+    "Neovim installation")
+
+  // Cache binaries for next time
+  await $`container exec --user ${USER} ${CONTAINER_NAME} bash -c ${"cp ~/.local/bin/bun ~/.local/bin/claude ~/.local/bin/neofetch ~/.local/bin/difft /sandlot/.cache/"}`.nothrow().quiet()
 }
 
 /** Configure git identity, API key helper, activity hook, and Claude settings. */
@@ -136,14 +175,16 @@ export async function create(log?: (msg: string) => void): Promise<void> {
 
   const home = homedir()
 
+  const cached = await hasCachedTooling()
+
   log?.("Pulling image & creating container")
   await createContainer(home)
 
   log?.("Installing packages")
-  await installPackages()
+  await installPackages(cached)
   await createHostSymlinks(home)
 
-  await installTooling(log)
+  await installTooling(cached, log)
 
   log?.("Configuring environment")
   const apiKey = await getApiKey()
@@ -235,7 +276,7 @@ export async function shell(workdir?: string): Promise<void> {
 /** Run neofetch in the container. */
 export async function info(): Promise<void> {
   const proc = Bun.spawn(
-    ["container", "exec", "--user", USER, CONTAINER_NAME, "neofetch"],
+    ["container", "exec", "--user", USER, CONTAINER_NAME, "env", `PATH=/home/${USER}/.local/bin:/usr/bin:/bin`, "neofetch"],
     { stdin: "inherit", stdout: "inherit", stderr: "inherit" },
   )
   await proc.exited