我按照这里从 Ubuntu 源安装 .NET 6 SDK 后安装 .NET 7 SDK。
wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
rm packages-microsoft-prod.deb
sudo apt-get update && sudo apt-get install dotnet-sdk-7.0导致此错误：
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package dotnet-sdk-7.0 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'dotnet-sdk-7.0' has no installation candidate
sudo apt show dotnet-sdk-7.0 -a结果是：
Package: dotnet-sdk-7.0
Version: 7.0.102-1
Priority: standard
Section: devel
Maintainer: Microsoft <[email protected]>
Installed-Size: 358 MB
Depends: aspnetcore-targeting-pack-7.0 (>= 7.0.2), netstandard-targeting-pack-2.1 (>= 2.1.0), dotnet-apphost-pack-7.0 (>= 7.0.2), dotnet-runtime-7.0 (>= 7.0.2), dotnet-targeting-pack-7.0 (>= 7.0.2), aspnetcore-runtime-7.0 (>= 7.0.2)
Homepage: https://github.com/dotnet/core
Download-Size: 90,6 MB
APT-Sources: https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
Description: Microsoft .NET SDK 7.0.102
.NET is a development platform that you can use to build command-line applications, microservices and modern websites. It is open source, cross-platform and is supported by Microsoft. We hope you enjoy using it! If you do, please consider joining the active community of developers that are contributing to the project on GitHub (https://github.com/dotnet/core). We happily accept issues and PRs.
Package: dotnet-sdk-7.0
Version: 7.0.101-1
Priority: standard
Section: devel
Maintainer: Microsoft <[email protected]>
Installed-Size: 358 MB
Depends: aspnetcore-targeting-pack-7.0 (>= 7.0.1), netstandard-targeting-pack-2.1 (>= 2.1.0), dotnet-apphost-pack-7.0 (>= 7.0.1), dotnet-runtime-7.0 (>= 7.0.1), dotnet-targeting-pack-7.0 (>= 7.0.1), aspnetcore-runtime-7.0 (>= 7.0.1)
Homepage: https://github.com/dotnet/core
Download-Size: 90,6 MB
APT-Sources: https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
Description: Microsoft .NET SDK 7.0.101
.NET is a development platform that you can use to build command-line applications, microservices and modern websites. It is open source, cross-platform and is supported by Microsoft. We hope you enjoy using it! If you do, please consider joining the active community of developers that are contributing to the project on GitHub (https://github.com/dotnet/core). We happily accept issues and PRs.
Package: dotnet-sdk-7.0
Version: 7.0.100-1
Priority: standard
Section: devel
Maintainer: Microsoft <[email protected]>
Installed-Size: 352 MB
Depends: aspnetcore-targeting-pack-7.0 (>= 7.0.0), netstandard-targeting-pack-2.1 (>= 2.1.0), dotnet-apphost-pack-7.0 (>= 7.0.0), dotnet-runtime-7.0 (>= 7.0.0), dotnet-targeting-pack-7.0 (>= 7.0.0), aspnetcore-runtime-7.0 (>= 7.0.0)
Homepage: https://github.com/dotnet/core
Download-Size: 88,4 MB
APT-Sources: https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
Description: Microsoft .NET SDK 7.0.100
.NET is a development platform that you can use to build command-line applications, microservices and modern websites. It is open source, cross-platform and is supported by Microsoft. We hope you enjoy using it! If you do, please consider joining the active community of developers that are contributing to the project on GitHub (https://github.com/dotnet/core). We happily accept issues and PRs.
也尝试过apt-get upgrade
/etc/apt/sources.list.d/microsoft-prod.list包含这个：
deb [arch=amd64,arm64,armhf] https://packages.microsoft.com/ubuntu/22.04/prod jammy main
apt policy dotnet-sdk-7.0显示：
dotnet-sdk-7.0:
Installed: (none)
Candidate: (none)
Version table:
7.0.102-1 -10
500 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
7.0.101-1 -10
500 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
7.0.100-1 -10
500 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages
/etc/apt/preferences我可以通过添加如下文件来使 .NET 7 SDK 安装正常运行这里：
Package: dotnet-sdk-7.0
Pin: origin "packages.microsoft.com"
Pin-Priority: 999
但是.NET 6 SDK 停止工作。