From aa05c66498b856e68098aabcb92028fb1c14ebec Mon Sep 17 00:00:00 2001
From: "Xuan (Sean) Hu" <i@huxuan.org>
Date: Fri, 10 May 2024 21:33:17 +0800
Subject: [PATCH] fix(pdm): ignore build requirements when update lock file
 (#28946)

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
---
 lib/modules/manager/pep621/processors/pdm.spec.ts | 1 +
 lib/modules/manager/pep621/processors/pdm.ts      | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/lib/modules/manager/pep621/processors/pdm.spec.ts b/lib/modules/manager/pep621/processors/pdm.spec.ts
index 3e44d383d6b128..bab8859c79c18b 100644
--- a/lib/modules/manager/pep621/processors/pdm.spec.ts
+++ b/lib/modules/manager/pep621/processors/pdm.spec.ts
@@ -155,6 +155,7 @@ describe('modules/manager/pep621/processors/pdm', () => {
           depType: depTypes.pdmDevDependencies,
         },
         { depName: 'group3/dep8', depType: depTypes.pdmDevDependencies },
+        { depName: 'dep9', depType: depTypes.buildSystemRequires },
       ];
       const result = await processor.updateArtifacts(
         {
diff --git a/lib/modules/manager/pep621/processors/pdm.ts b/lib/modules/manager/pep621/processors/pdm.ts
index c060e8af23b1a6..c36311540fcd14 100644
--- a/lib/modules/manager/pep621/processors/pdm.ts
+++ b/lib/modules/manager/pep621/processors/pdm.ts
@@ -187,6 +187,10 @@ function generateCMDs(updatedDeps: Upgrade[]): string[] {
         );
         break;
       }
+      case depTypes.buildSystemRequires:
+        // build requirements are not locked in the lock files, no need to update.
+        // Reference: https://github.com/pdm-project/pdm/discussions/2869
+        break;
       default: {
         addPackageToCMDRecord(packagesByCMD, pdmUpdateCMD, dep.packageName!);
       }