fix: update without specify --latest should not update tag version

.changeset/tasty-coins-join.md

@@ -0,0 +1,6 @@
+---
+"@pnpm/plugin-commands-installation": patch
+"@pnpm/resolve-dependencies": patch
+---
+
+Update without specify --latest should not update tag version

pkg-manager/plugin-commands-installation/test/update/update.ts

@@ -335,3 +335,33 @@ test('do not update anything if all the dependencies are ignored and trying to u
   const lockfileUpdated = await project.readLockfile()
   expect(lockfileUpdated.packages['/@pnpm.e2e/foo/100.0.0']).toBeTruthy()
 })
+
+test('should not update tag version when --latest not set', async () => {
+  await addDistTag({ package: '@pnpm.e2e/peer-a', version: '1.0.1', distTag: 'latest' })
+  await addDistTag({ package: '@pnpm.e2e/peer-c', version: '2.0.0', distTag: 'canary' })
+  await addDistTag({ package: '@pnpm.e2e/foo', version: '2.0.0', distTag: 'latest' })
+
+  prepare({
+    dependencies: {
+      '@pnpm.e2e/peer-a': 'latest',
+      '@pnpm.e2e/peer-c': 'canary',
+      '@pnpm.e2e/foo': '1.0.0',
+    },
+  })
+
+  await install.handler({
+    ...DEFAULT_OPTS,
+    dir: process.cwd(),
+  })
+
+  await update.handler({
+    ...DEFAULT_OPTS,
+    dir: process.cwd(),
+    latest: false,
+  })
+
+  const manifest = await loadJsonFile<ProjectManifest>('package.json')
+  expect(manifest.dependencies?.['@pnpm.e2e/peer-a']).toBe('latest')
+  expect(manifest.dependencies?.['@pnpm.e2e/peer-c']).toBe('canary')
+  expect(manifest.dependencies?.['@pnpm.e2e/foo']).toBe('1.0.0')
+})

pkg-manager/resolve-dependencies/src/updateProjectManifest.ts

@@ -103,6 +103,7 @@ function resolvedDirectDepToSpecObject (
         specRaw,
         version,
         rolling: shouldUseWorkspaceProtocol && opts.saveWorkspaceProtocol === 'rolling',
+        isNew,
       })
     }
     if (
@@ -156,6 +157,7 @@ function getPrefPreferSpecifiedExoticSpec (
     specRaw: string
     pinnedVersion: PinnedVersion
     rolling: boolean
+    isNew?: Boolean
   }
 ) {
   const prefix = getPrefix(opts.alias, opts.name)
@@ -168,7 +170,7 @@ function getPrefPreferSpecifiedExoticSpec (
       }
     }
     const selector = versionSelectorType(specWithoutName)
-    if (!selector) {
+    if (!((selector != null) && (selector.type === 'version' || selector.type === 'range')) && opts.isNew === undefined) {
       return opts.specRaw.slice(opts.alias.length + 1)
     }
   }