From 508c777332d9ba0633a21c60e032b543def9a44a Mon Sep 17 00:00:00 2001
From: Jacek Sieka <jacek@status.im>
Date: Wed, 23 Nov 2022 16:23:20 +0100
Subject: [PATCH 1/2] normalise nimble

---
 .github/workflows/ci.yml | 22 +++++++++++++---------
 serialization.nimble     | 22 +++++++++++++++++++---
 2 files changed, 32 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 04f05ed..2bf2025 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency: # Cancel stale PR builds (but not push builds)
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   build:
     strategy:
@@ -30,7 +34,7 @@ jobs:
             shell: bash
           - target:
               os: macos
-            builder: macos-10.15
+            builder: macos-12
             shell: bash
           - target:
               os: windows
@@ -43,10 +47,10 @@ jobs:
 
     name: '${{ matrix.target.os }}-${{ matrix.target.cpu }} (Nim ${{ matrix.branch }})'
     runs-on: ${{ matrix.builder }}
-    continue-on-error: ${{ matrix.branch == 'version-1-6' || matrix.branch == 'devel' }}
+    continue-on-error: ${{ matrix.branch == 'devel' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install build dependencies (Linux i386)
         if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
@@ -94,23 +98,23 @@ jobs:
         id: windows-dlls-cache
         uses: actions/cache@v2
         with:
-          path: external/dlls
-          key: 'dlls'
+          path: external/dlls-${{ matrix.target.cpu }}
+          key: 'dlls-${{ matrix.target.cpu }}'
 
-      - name: Install DLL dependencies (Windows)
+      - name: Install DLLs dependencies (Windows)
         if: >
           steps.windows-dlls-cache.outputs.cache-hit != 'true' &&
           runner.os == 'Windows'
         run: |
-          mkdir external
+          mkdir -p external
           curl -L "https://nim-lang.org/download/windeps.zip" -o external/windeps.zip
-          7z x external/windeps.zip -oexternal/dlls
+          7z x -y external/windeps.zip -oexternal/dlls-${{ matrix.target.cpu }}
 
       - name: Path to cached dependencies (Windows)
         if: >
           runner.os == 'Windows'
         run: |
-          echo '${{ github.workspace }}'"/external/dlls" >> $GITHUB_PATH
+          echo "${{ github.workspace }}/external/dlls-${{ matrix.target.cpu }}" >> $GITHUB_PATH
 
       - name: Derive environment variables
         run: |
diff --git a/serialization.nimble b/serialization.nimble
index 69f91bf..3924c64 100644
--- a/serialization.nimble
+++ b/serialization.nimble
@@ -12,7 +12,23 @@ requires "nim >= 1.2.0",
          "unittest2",
          "stew"
 
+let nimc = getEnv("NIMC", "nim") # Which nim compiler to use
+let lang = getEnv("NIMLANG", "c") # Which backend (c/cpp/js)
+let flags = getEnv("NIMFLAGS", "") # Extra flags for the compiler
+let verbose = getEnv("V", "") notin ["", "0"]
+
+let styleCheckStyle = if (NimMajor, NimMinor) < (1, 6): "hint" else: "error"
+let cfg =
+  " --styleCheck:usages --styleCheck:" & styleCheckStyle &
+  (if verbose: "" else: " --verbosity:0 --hints:off") &
+  " --skipParentCfg --skipUserCfg --outdir:build --nimcache:build/nimcache -f"
+
+proc build(args, path: string) =
+  exec nimc & " " & lang & " " & cfg & " " & flags & " " & args & " " & path
+
+proc run(args, path: string) =
+  build args & " -r", path
+
 task test, "Run all tests":
-  let common_args = "c -r -f --hints:off --skipParentCfg --styleCheck:usages --styleCheck:error " & getEnv("NIMFLAGS")
-  exec "nim " & common_args & " --threads:off tests/test_all"
-  exec "nim " & common_args & " --threads:on tests/test_all"
+  for threads in ["--threads:off", "--threads:on"]:
+    run threads, "tests/test_all"

From b5e3f8251913a5928ed96e59b4e399f73bfbad96 Mon Sep 17 00:00:00 2001
From: Jacek Sieka <jacek@status.im>
Date: Wed, 23 Nov 2022 16:30:49 +0100
Subject: [PATCH 2/2] ignore build

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 35e10c2..1e2eebd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ nimcache/
 tests/test_all
 nimble.develop
 nimble.paths
+build/