fix(core): increase hash length (#6829)

## What's the problem this PR addresses?

<!-- Describe the rationale of your PR. -->
<!-- Link all issues that it closes. (Closes/Resolves #xxxx.) -->

I would like to resolve the hash collision issue reported here.
(#6827)

## How did you fix it?

<!-- A detailed description of your implementation. -->

It won't be the perfect solution, but by lengthening the hash, the
likelihood of peerHash redundancy will be significantly reduced.

## Checklist

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Author: sekyungk

.yarn/versions/7f906e6f.yml

@@ -0,0 +1,35 @@
+releases:
+  "@yarnpkg/core": patch
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-exec"
+  - "@yarnpkg/plugin-file"
+  - "@yarnpkg/plugin-git"
+  - "@yarnpkg/plugin-github"
+  - "@yarnpkg/plugin-http"
+  - "@yarnpkg/plugin-init"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-jsr"
+  - "@yarnpkg/plugin-link"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-version"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/cli"
+  - "@yarnpkg/doctor"
+  - "@yarnpkg/extensions"
+  - "@yarnpkg/nm"
+  - "@yarnpkg/pnpify"
+  - "@yarnpkg/sdks"

packages/acceptance-tests/pkg-tests-specs/sources/features/peerDependenciesMeta.test.ts

@@ -40,7 +40,7 @@ describe(`Features`, () => {
         async ({path, run, source}) => {
           const {stdout} = await run(`install`);
 
-          expect(stdout).toMatch(/no-deps is listed by your project with version 1\.1\.0 \(p[a-f0-9]{5}\), which doesn't satisfy what mismatched-peer-deps-lvl1 and other dependencies request \(1\.0\.0\)/);
+          expect(stdout).toMatch(/no-deps is listed by your project with version 1\.1\.0 \(p[a-f0-9]{6}\), which doesn't satisfy what mismatched-peer-deps-lvl1 and other dependencies request \(1\.0\.0\)/);
         },
       ),
     );
@@ -57,7 +57,7 @@ describe(`Features`, () => {
         async ({path, run, source}) => {
           const {stdout} = await run(`install`);
 
-          expect(stdout).toMatch(/no-deps is listed by your project with version 1\.1\.0 \(p[a-f0-9]{5}\), which doesn't satisfy what mismatched-peer-deps-lvl[12] \(via mismatched-peer-deps-lvl0\) and other dependencies request \(1\.0\.0\)/);
+          expect(stdout).toMatch(/no-deps is listed by your project with version 1\.1\.0 \(p[a-f0-9]{6}\), which doesn't satisfy what mismatched-peer-deps-lvl[12] \(via mismatched-peer-deps-lvl0\) and other dependencies request \(1\.0\.0\)/);
         },
       ),
     );

packages/yarnpkg-core/sources/Project.ts

@@ -2375,7 +2375,7 @@ function applyVirtualResolutionMutations({
 
               requests: new Map(),
 
-              hash: `p${hashUtils.makeHash(parentLocator.locatorHash, peerDescriptor.identHash).slice(0, 5)}`,
+              hash: `p${hashUtils.makeHash(parentLocator.locatorHash, peerDescriptor.identHash).slice(0, 6)}`,
             };
           });
 
@@ -2565,7 +2565,7 @@ function applyVirtualResolutionMutations({
     // For backwards-compatibility
     // TODO: Remove for next major
     for (const peerRequest of requirement.requests.values()) {
-      const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 5)}`;
+      const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 6)}`;
 
       peerRequirements.set(hash, {
         subject: requirement.subject.locatorHash,
@@ -2608,7 +2608,7 @@ function applyVirtualResolutionMutations({
 
           // For backwards-compatibility
           // TODO: Remove for next major
-          const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 5)}`;
+          const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 6)}`;
 
           peerWarnings.push({
             type: PeerWarningType.NotCompatible,
@@ -2642,7 +2642,7 @@ function applyVirtualResolutionMutations({
 
           // For backwards-compatibility
           // TODO: Remove for next major
-          const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 5)}`;
+          const hash = `p${hashUtils.makeHash(requirement.subject.locatorHash, structUtils.stringifyIdent(requirement.ident), peerRequest.requester.locatorHash).slice(0, 6)}`;
 
           peerWarnings.push({
             type: PeerWarningType.NotProvided,