fix: don't prompt on npm exec [directory]

Local directories have to be "installed" so that their bins are linked
and set up and callable, the user shouldn't need to be prompted to do
that.  Note that this does NOT affect anything passed via the
`--package` param, because that may also contain non-directory specs so
the existing behavior needs to be preserved.  This is a small QOL
improvement for the isolated use case of "npm exec [directory]"

workspaces/libnpmexec/lib/index.js

@@ -132,7 +132,16 @@ const exec = async (opts) => {
     packages.push(args[0])
   }
 
-  // TODO We need any directiories in packages to pass through path.resolve
+  // Resolve any directory specs so that the npx directory is unique to the
+  // resolved directory, not the potentially relative one (i.e. "npx .")
+  for (const i in packages) {
+    const pkg = packages[i]
+    const spec = npa(pkg)
+    if (spec.type === 'directory') {
+      packages[i] = spec.fetchSpec
+    }
+  }
+
   const localArb = new Arborist({ ...flatOptions, path })
   const localTree = await localArb.loadActual()
 
@@ -184,7 +193,15 @@ const exec = async (opts) => {
       throw new Error('Must provide a valid npxCache path')
     }
     const hash = crypto.createHash('sha512')
-      .update(packages.sort((a, b) => a.localeCompare(b, 'en')).join('\n'))
+      .update(packages.map(p => {
+        // Keeps the npx directory unique to the resolved directory, not the
+        // potentially relative one (i.e. "npx .")
+        const spec = npa(p)
+        if (spec.type === 'directory') {
+          return spec.fetchSpec
+        }
+        return p
+      }).sort((a, b) => a.localeCompare(b, 'en')).join('\n'))
       .digest('hex')
       .slice(0, 16)
     const installDir = resolve(npxCache, hash)

workspaces/libnpmexec/test/index.js

@@ -482,7 +482,16 @@ require('fs').writeFileSync(process.argv.slice(2)[0], 'LOCAL PKG')`,
   const executable = resolve(path, 'a/index.js')
   fs.chmodSync(executable, 0o775)
 
-  await libexec({
+  const mockexec = t.mock('../lib/index.js', {
+    '@npmcli/ci-detect': () => true,
+    'proc-log': {
+      warn (title, msg) {
+        t.fail('should not warn about local file package install')
+      },
+    },
+  })
+
+  await mockexec({
     ...baseOpts,
     args: [`file:${resolve(path, 'a')}`, 'resfile'],
     cache,