feat: set default nmMode to hardlinks-local

Author: jdanil

.yarn/versions/f73c4856.yml

@@ -0,0 +1,2 @@
+releases:
+  "@yarnpkg/plugin-nm": major

CHANGELOG.md

@@ -16,6 +16,7 @@ Yarn now accepts sponsorships! Please give a look at our [OpenCollective](https:
 - Some legacy layers have been sunset:
   - Plugins cannot access the Clipanion 2 APIs anymore (upgrade to [Clipanion 3](https://github.com/arcanis/clipanion))
   - Plugins cannot access the internal copy of Yup anymore (use [Typanion](https://github.com/arcanis/typanion) instead)
+- Set `nmMode` to `hardlinks-local` by default.
 
 ### **API Changes**
 

packages/gatsby/static/configuration/yarnrc.json

@@ -407,7 +407,7 @@
       "description": "If set to `hardlinks-local` Yarn will utilize hardlinks to reduce disk space consumption inside `node_modules` directories in a current project. With `hardlinks-global` Yarn will use global content addressable storage to reduce `node_modules` size across all the projects using this option.",
       "type": "string",
       "enum": ["classic", "hardlinks-local", "hardlinks-global"],
-      "default": "classic"
+      "default": "hardlinks-local"
     },
     "nodeLinker": {
       "_package": "@yarnpkg/plugin-pnp",

packages/plugin-nm/sources/NodeModulesLinker.ts

@@ -473,7 +473,7 @@ async function findInstallState(project: Project, {unrollAliases = false}: {unro
   if (locatorState.__metadata.version > STATE_FILE_VERSION)
     return null;
 
-  const nmMode = locatorState.__metadata.nmMode || NodeModulesMode.CLASSIC;
+  const nmMode = locatorState.__metadata.nmMode || NodeModulesMode.HARDLINKS_LOCAL;
 
   const locatorMap: NodeModulesLocatorMap = new Map();
   const binSymlinks: BinSymlinkMap = new Map();

packages/plugin-nm/sources/index.ts

@@ -40,7 +40,7 @@ const plugin: Plugin<Hooks> = {
         NodeModulesMode.HARDLINKS_LOCAL,
         NodeModulesMode.HARDLINKS_GLOBAL,
       ],
-      default: NodeModulesMode.CLASSIC,
+      default: NodeModulesMode.HARDLINKS_LOCAL,
     },
     nmSelfReferences: {
       description: `If set to 'false' the workspace will not be allowed to require itself and corresponding self-referencing symlink will not be created`,