From 3b684b1e024bbd0611d80fdba3158c0d083043ad Mon Sep 17 00:00:00 2001
From: Hubert Bugaj <lesny.rumcajs+github@gmail.com>
Date: Tue, 9 Dec 2025 18:32:27 +0100
Subject: [PATCH 1/2] chore: resurrect codecov reports

---
 .github/codecov.yml            | 14 +++++++
 .github/workflows/coverage.yml | 71 ++++++++++++++++++++++++++++++++++
 README.md                      |  2 +-
 3 files changed, 86 insertions(+), 1 deletion(-)
 create mode 100644 .github/codecov.yml
 create mode 100644 .github/workflows/coverage.yml

diff --git a/.github/codecov.yml b/.github/codecov.yml
new file mode 100644
index 000000000000..3313b5533f98
--- /dev/null
+++ b/.github/codecov.yml
@@ -0,0 +1,14 @@
+codecov:
+  require_ci_to_pass: false
+comment: true
+coverage:
+  status:
+    patch:
+      default:
+        informational: true
+    project:
+      default:
+        informational: true
+        threshold: 1.0
+github_checks:
+  annotations: false
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
new file mode 100644
index 000000000000..af5cfa2c1e9a
--- /dev/null
+++ b/.github/workflows/coverage.yml
@@ -0,0 +1,71 @@
+name: Code coverage
+
+# Cancel workflow if there is a new change to the branch.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
+on:
+  workflow_dispatch:
+  merge_group:
+  pull_request:
+    branches:
+      - main
+    # This needs to be declared explicitly so that the job is actually
+    # run when moved out of draft.
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths-ignore:
+      - "docs/**"
+      - ".github/workflows/docs-*.yml"
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "docs/**"
+      - ".github/workflows/docs-*.yml"
+
+env:
+  CI: 1
+  CARGO_INCREMENTAL: 0
+  CACHE_TIMEOUT_MINUTES: 5
+  RUSTC_WRAPPER: sccache
+  CC: sccache clang
+  CXX: sccache clang++
+
+jobs:
+  codecov:
+    name: Coverage
+    if: github.event.pull_request.draft == false
+    runs-on: buildjet-4vcpu-ubuntu-2204
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v6
+      - name: Setup sccache
+        uses: mozilla-actions/sccache-action@v0.0.9
+        timeout-minutes: ${{ fromJSON(env.CACHE_TIMEOUT_MINUTES) }}
+        continue-on-error: true
+      - uses: actions/setup-go@v6
+        with:
+          go-version-file: "go.work"
+      - uses: taiki-e/install-action@cargo-llvm-cov
+      - uses: taiki-e/install-action@nextest
+      - name: Generate code coverage
+        run: |
+          cargo llvm-cov --workspace --codecov --output-path lcov.info nextest
+        env:
+          CC: "sccache clang"
+          CXX: "sccache clang++"
+          # To minimize compile times: https://nnethercote.github.io/perf-book/build-configuration.html#minimizing-compile-times
+          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
+      # Save lcov.info as an artifact for debugging purposes
+      - uses: actions/upload-artifact@v4
+        with:
+          name: lcov.info
+          path: lcov.info
+          if-no-files-found: error
+      - name: Upload CodeCov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: lcov.info
+          fail_ci_if_error: true
diff --git a/README.md b/README.md
index d16c5dfd017a..8ae3bfddbdb7 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,9 @@
 </p>
 
 <p align="center">
-    <a href="https://github.com/ChainSafe/forest/actions"><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/ChainSafe/forest/forest.yml?style=for-the-badge"></a>
     <a href="https://github.com/ChainSafe/forest/releases/latest"><img alt="Latest release" src="https://img.shields.io/github/v/release/ChainSafe/forest?style=for-the-badge"></a>
     <a href="https://docs.forest.chainsafe.io"><img alt="Docs" src="https://img.shields.io/badge/doc-user_guide-green?style=for-the-badge"></a>
+    <a href="https://codecov.io/github/ChainSafe/forest"><img src="https://codecov.io/github/ChainSafe/forest/graph/badge.svg?token=1OHO2CSD17"/></a>
 </p>
  <p align="center">
     <a href="https://github.com/ChainSafe/forest/blob/main/LICENSE-APACHE"><img alt="License Apache 2.0" src="https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=for-the-badge"></a>

From 50216ca504fee3896a678392785a0809ae6dc880 Mon Sep 17 00:00:00 2001
From: Hubert <hubert@chainsafe.io>
Date: Wed, 10 Dec 2025 15:00:36 +0100
Subject: [PATCH 2/2] Update README.md

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 8ae3bfddbdb7..412a6a3c6b2c 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 <p align="center">
     <a href="https://github.com/ChainSafe/forest/releases/latest"><img alt="Latest release" src="https://img.shields.io/github/v/release/ChainSafe/forest?style=for-the-badge"></a>
     <a href="https://docs.forest.chainsafe.io"><img alt="Docs" src="https://img.shields.io/badge/doc-user_guide-green?style=for-the-badge"></a>
-    <a href="https://codecov.io/github/ChainSafe/forest"><img src="https://codecov.io/github/ChainSafe/forest/graph/badge.svg?token=1OHO2CSD17"/></a>
+    <a href="https://codecov.io/github/ChainSafe/forest"><img alt="Codecov" src="https://codecov.io/github/ChainSafe/forest/graph/badge.svg?token=1OHO2CSD17"/></a>
 </p>
  <p align="center">
     <a href="https://github.com/ChainSafe/forest/blob/main/LICENSE-APACHE"><img alt="License Apache 2.0" src="https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=for-the-badge"></a>