CircleCI集成GitVersion生成NuGet包失败问题排查求助

原本正常运行的CircleCI流水线（用于生成NuGet包并上传至nuget.org）突然失效，报错显示dotnet gitversion未输出合法JSON对象，替换jq为fx后仍触发SyntaxError: JSON value expected on line 1错误。当前环境已升级至.NET 8.0，对应GitVersion版本为6.0，流水线的config.yml配置如下：

version: 2.1

jobs:

  build-and-test:
    docker:
      - image: mcr.microsoft.com/dotnet/sdk:8.0
    steps:

      - checkout

      - run:
          name: Cambiar directorio
          command: cd ./Repo
         
      - run:
          name: Instalar Node
          command: apk add nodejs

      - run:
          name: Instalar NPM
          command: apk add npm

      - run:
          working_directory: ./Repo
          name: Ejecutar tests
          command: |
            dotnet test
            << pipeline.git.tag >>
      - run:
          working_directory: ./Repo
          name: Compilar version Release
          command: |
            dotnet build --configuration Release

      - run:
          name: Patchear imagen
          command: |
            apk add openssh git jq

      - run:
          name: Generar manifest
          command: |
            dotnet new tool-manifest

      - run:
          name: Instalar GitVersion
          command: |
            dotnet tool install GitVersion.Tool

      - run:
          working_directory: ./Repo/Components
          name: Generar paquete nuget
          command: |
            VERSION=$(dotnet gitversion | jq -r ".SemVer") 
            dotnet pack --configuration Release -p:Version=$VERSION -o ./outputs/packages/
            
      - store_artifacts:
          path: ./Repo/Components/outputs/packages
          destination: packages

      - persist_to_workspace:
          root: ./Repo/Components/outputs/packages
          paths:
            - "*.nupkg"
            - "*.snupkg"
  push:
    docker:
      - image: mcr.microsoft.com/dotnet/sdk:8.0
    steps:
      - attach_workspace:
          at: /tmp/workspace
      - run:
          name: Pushear a Nuget.org
          command: dotnet nuget push /tmp/workspace/*.* --api-key someapikey --skip-duplicate --source https://api.nuget.org/v3/index.json

workflows:
  setup:
    when:
      and:
        - equal: [ main, << pipeline.git.branch >> ]
    jobs:
      - build-and-test:
          filters:
            tags:
              only: /.*/
      - push:
          requires:
            - build-and-test
          context:
            - NuGet
          filters:
            tags:
              only: /^v(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)$/

• 强制GitVersion输出JSON格式：GitVersion 6.x默认输出是人类可读文本而非JSON，必须显式指定--output json参数才能让jq/fx解析。修改生成NuGet包步骤的命令：

  VERSION=$(dotnet gitversion --output json | jq -r ".SemVer")
  

• 统一工作目录：当前dotnet new tool-manifest和dotnet tool install在根目录执行，但后续在./Repo/Components运行dotnet gitversion，可能导致GitVersion无法正确识别仓库根目录。要么把工具安装步骤移到./Repo/Components目录，要么指定仓库根路径：

  VERSION=$(dotnet gitversion --output json --repository-root ./../.. | jq -r ".SemVer")
  

• 排查GitVersion执行日志：在流水线中添加一步单独执行dotnet gitversion --output json，直接查看输出内容，确认是否有错误提示（比如仓库无提交、配置文件缺失等）：

  dotnet gitversion --output json
  

• 检查GitVersion配置文件：确保仓库根目录存在GitVersion.yml，且配置适配6.x版本（比如mode: Mainline这类核心配置是否存在）。
• 修复流水线步骤逻辑：
  • Cambiar directorio步骤的cd ./Repo不会影响后续步骤的工作目录，后续步骤必须通过working_directory指定路径，或者把所有步骤统一到./Repo下执行。
  • Patchear imagen步骤安装git的时机太晚，checkout步骤已执行，可能导致Git环境异常，建议把安装git的步骤移到checkout之前。

内容的提问来源于stack exchange，提问作者Mauro Alvarez