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Workaround for yarnpkg/yarn#9011

Author: Cyberboss

build/Dockerfile

@@ -19,9 +19,6 @@ RUN . $NVM_DIR/nvm.sh \
 	&& rm -rf /var/lib/apt/lists/* \
 	&& npm install -g npm
 
-#You may wonder why this needs to be in a seperate step. I don't know... It just works(tm)
-RUN npm install -g yarn
-
 # Build web control panel
 WORKDIR /repo/build
 

build/Version.props

@@ -19,5 +19,6 @@
     <!-- Update this frequently with dotnet runtime patches. MAJOR MUST MATCH ABOVE! -->
     <TgsDotnetRedistUrl>https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/6.0.24/dotnet-hosting-6.0.24-win.exe</TgsDotnetRedistUrl>
     <TgsMariaDBRedistVersion>10.11.6</TgsMariaDBRedistVersion>
+    <TgsYarnVersion>1.22.19</TgsYarnVersion>
   </PropertyGroup>
 </Project>

src/Tgstation.Server.Common/Tgstation.Server.Common.csproj

@@ -17,7 +17,7 @@
   <!-- This is here because I know we have node as a build dep so this just works -->
   <Target Name="IconGeneration" BeforeTargets="ResolveAssemblyReferences" Inputs="build_logo.js;../../build/logo.svg" Outputs="../../artifacts/tgs.ico;../../artifacts/tgs.png">
     <Message Text="Restoring yarn packages..." Importance="high" />
-    <Exec Command="npx --yes yarn add [email protected] [email protected]" />
+    <Exec Command="npx --yes yarn@$(TgsYarnVersion) add [email protected] [email protected]" />
     <Message Text="Generating icons from SVG..." Importance="high" />
     <Exec Command="node ./build_logo.js" />
   </Target>

src/Tgstation.Server.Host/Tgstation.Server.Host.csproj

@@ -28,13 +28,13 @@
     <Exec Command="git clone https://github.com/tgstation/tgstation-server-webpanel --branch v$(TgsControlPanelVersion) --depth 1 ClientApp" />
     <RemoveDir Directories="ClientApp/.git" /> <!-- Allows git clean to clean it out -->
     <Message Text="Restoring yarn packages..." Importance="high" />
-    <Exec WorkingDirectory="ClientApp" Command="npx --yes yarn install --immutable" />
+    <Exec WorkingDirectory="ClientApp" Command="npx --yes yarn@$(TgsYarnVersion) install --immutable" />
     <Touch Files="$(NpmInstallStampFile)" AlwaysCreate="true" />
   </Target>
 
   <Target Condition="'$(TGS_HOST_NO_WEBPANEL)' != 'true'" Name="NpmBuild" BeforeTargets="BeforeBuild" DependsOnTargets="ClientInstall" Inputs="../../build/ControlPanelVersion.props" Outputs="wwwroot\index.html">
     <Message Text="Building web control panel..." Importance="high" />
-    <Exec WorkingDirectory="ClientApp" Command="npx --yes yarn run msbuild" />
+    <Exec WorkingDirectory="ClientApp" Command="npx --yes yarn@$(TgsYarnVersion) run msbuild" />
   </Target>
 
   <Target Name="NpmClean" AfterTargets="Clean">