Super simple Git prerelease versioning

This is a build utility package that adjusts your csproj / vbproj project's NuGet and AssemblyInformalVersion based on the current git repository's branch name and commit count by making use of the VS 2017 SDK-based project system.

Use it like this in your project:

<Project Sdk="Microsoft.NET.Sdk">
    <PropertyGroup>
        <TargetFramework>netstandard1.6</TargetFramework>
        <VersionPrefix>1.2.3</VersionPrefix>
    </PropertyGroup>
    <ItemGroup>
        <PackageReference Include="DasMulli.SimpleGitVersion" Version="1.0.0-*" PrivateAssets="All" />
    </ItemGroup>
</Project>

If you are on the master branch and have 23 commits, the resulting version will be:

1.2.3-master-0000023

If you are on the feature/awesome branch and have 25 commits, the resulting version will be:

1.2.3-feature-awesome-0000025

Define Release labels for known branches

For known branches, you can define custom release lables (think of it as branch name to label dictionary):

<ItemGroup>
  <GitBranchToReleaseLabelMapping Include="master" ReleaseLabel="rc" />
  <GitBranchToReleaseLabelMapping Include="develop" ReleaseLabel="beta" />
</ItemGroup>

If you are on the master branch and have 23 commits, the resulting version will be:

1.2.3-rc-0000023

If you are on the feature/awesome branch and have 25 commits, the resulting version will be:

1.2.3-feature-awesome-0000025

SemVer 2.0.0

For SemVer 2.0.0, you'll want your branch name and commit count be separate prerelease lables, separated by a single dot (.) and no zero-padding for the commit count. This can be enabled by setting the property UseCompatGitVersion to false. Because older NuGet clients and feeds(!!) might not fully support SemVer 2.0.0, the "compatible" SemVer 1.0.0 version is used by default. Note that the support for pre-set VersionSuffix values is limited (there will be a dash).

But if you like to live dangerously, you can easily enable SemVer 2.0.0 versions using:

<Project Sdk="Microsoft.NET.Sdk">
    <PropertyGroup>
        <TargetFramework>netstandard1.6</TargetFramework>
        <VersionPrefix>1.2.3</VersionPrefix>
        <UseCompatGitVersion>false</UseCompatGitVersion>
    </PropertyGroup>
    <ItemGroup>
        <PackageReference Include="DasMulli.SimpleGitVersion" Version="1.0.0-*" PrivateAssets="All" />
    </ItemGroup>
</Project>

If you are on the master branch and have 23 commits, the resulting version will be:

1.2.3-master.23

If you are on the feature/awesome branch and have 25 commits, the resulting version will be:

1.2.3-feature-awesome.25

Omit branch name in version suffix but use a custom label

The well-known VersionPrefix is considered while the final version is calculated, so you can define it yourself and tell SimpleGitVersion to not care about branch names:

<Project Sdk="Microsoft.NET.Sdk">
    <PropertyGroup>
        <TargetFramework>netstandard1.6</TargetFramework>
        <VersionPrefix>1.2.3</VersionPrefix>
        <VersionSuffix>foo</VersionSuffix>
        <IncludeBranchInGitVersion>false</IncludeBranchInGitVersion>
    </PropertyGroup>
    <ItemGroup>
        <PackageReference Include="DasMulli.SimpleGitVersion" Version="1.0.0-*" PrivateAssets="All" />
    </ItemGroup>
</Project>

If you are on ANY branch and have 23 commits, the resulting version will be:

1.2.3-foo-0000023

Manually disable prerelease version generation

For release builds, you usually want to omit prerelease versions being generated. There is a property that can be used to disable all git version generation: DisableGitVersionSuffix. You can use it like this in your build scripts (not that a prerelease version will still be generated if you set VersionSuffix in your project file):

> dotnet pack /p:DisableGitVersionSuffix=true

More control and re-using the values calculated by SimpleGitVersion

See the msbuild target's inline documentation for more details.