From f1cb40c4e1fb689bab4eedb56172fa7bb50c2009 Mon Sep 17 00:00:00 2001
From: Ryo Matsukawa <76232929+ryo-manba@users.noreply.github.com>
Date: Sat, 7 Feb 2026 01:13:15 +0900
Subject: [PATCH] fix: allow pnpm `run -r` to work with empty
 pnpm-workspace.yaml (#10520)

close #10497
---
 .changeset/fifty-mangos-arrive.md |  5 +++++
 pnpm/src/main.ts                  |  2 +-
 pnpm/test/monorepo/index.ts       | 16 ++++++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/fifty-mangos-arrive.md

diff --git a/.changeset/fifty-mangos-arrive.md b/.changeset/fifty-mangos-arrive.md
new file mode 100644
index 0000000000..fde47be53d
--- /dev/null
+++ b/.changeset/fifty-mangos-arrive.md
@@ -0,0 +1,5 @@
+---
+"pnpm": patch
+---
+
+Fixed `pnpm run -r` failing with "No projects matched the filters" when an empty `pnpm-workspace.yaml` exists [#10497](https://github.com/pnpm/pnpm/issues/10497).
diff --git a/pnpm/src/main.ts b/pnpm/src/main.ts
index 6a478b1adf..527441d9e8 100644
--- a/pnpm/src/main.ts
+++ b/pnpm/src/main.ts
@@ -213,7 +213,7 @@ export async function main (inputArgv: string[]): Promise<void> {
     const relativeWSDirPath = () => path.relative(process.cwd(), wsDir) || '.'
     if (config.workspaceRoot) {
       filters.push({ filter: `{${relativeWSDirPath()}}`, followProdDepsOnly: Boolean(config.filterProd.length) })
-    } else if (filters.length === 0 && workspaceDir && !config.includeWorkspaceRoot && (cmd === 'run' || cmd === 'exec' || cmd === 'add' || cmd === 'test')) {
+    } else if (filters.length === 0 && workspaceDir && config.workspacePackagePatterns && !config.includeWorkspaceRoot && (cmd === 'run' || cmd === 'exec' || cmd === 'add' || cmd === 'test')) {
       filters.push({ filter: `!{${relativeWSDirPath()}}`, followProdDepsOnly: Boolean(config.filterProd.length) })
     }
 
diff --git a/pnpm/test/monorepo/index.ts b/pnpm/test/monorepo/index.ts
index 07339ca830..4301a2ba45 100644
--- a/pnpm/test/monorepo/index.ts
+++ b/pnpm/test/monorepo/index.ts
@@ -61,6 +61,22 @@ test('no projects found', async () => {
   }
 })
 
+test('empty pnpm-workspace.yaml should not break pnpm run -r', async () => {
+  prepare({
+    name: 'project',
+    version: '1.0.0',
+    scripts: {
+      test: 'echo Passed',
+    },
+  })
+
+  fs.writeFileSync('pnpm-workspace.yaml', '')
+
+  const { stdout, status } = execPnpmSync(['run', '-r', 'test'])
+  expect(status).toBe(0)
+  expect(stdout.toString()).toContain('Passed')
+})
+
 const invalidWorkspaceManifests = [
   'pnpm-workspaces.yaml',
   'pnpm-workspaces.yml',