Also configure the environment variable MSYSTEM

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.vscode/settings.json

@@ -8,6 +8,7 @@
         "vstfs://.*"
     ],
     "cSpell.words": [
+        "MSYSTEM",
         "Pacman",
         "autodrain",
         "unzipper",

main.ts

@@ -25,6 +25,10 @@ async function run(): Promise<void> {
 
     // Set up PATH so that Git for Windows' SDK's `bash.exe` is found
     core.addPath(`${outputDirectory}/usr/bin`)
+    core.exportVariable(
+      'MSYSTEM',
+      architecture === 'i686' ? 'MING32' : 'MINGW64'
+    )
   } catch (error) {
     core.setFailed(error.message)
   }