Allow uninstalling of partially installed toolchains from config.json

Author: cmcgee1024

Sources/Swiftly/Uninstall.swift

@@ -56,7 +56,12 @@ struct Uninstall: SwiftlyCommand {
             }
         } else {
             let selector = try ToolchainSelector(parsing: self.toolchain)
-            toolchains = startingConfig.listInstalledToolchains(selector: selector)
+            var installedToolchains = startingConfig.listInstalledToolchains(selector: selector)
+            // This is in the unusual case that the inUse toolchain is not listed in the installed toolchains
+            if let inUse = startingConfig.inUse, selector.matches(toolchain: inUse) && !startingConfig.installedToolchains.contains(inUse) {
+                installedToolchains.append(inUse)
+            }
+            toolchains = installedToolchains
         }
 
         guard !toolchains.isEmpty else {
@@ -117,13 +122,14 @@ struct Uninstall: SwiftlyCommand {
 
     static func execute(_ toolchain: ToolchainVersion, _ config: inout Config) async throws {
         SwiftlyCore.print("Uninstalling \(toolchain)...", terminator: "")
-        try Swiftly.currentPlatform.uninstall(toolchain)
         config.installedToolchains.remove(toolchain)
         // This is here to prevent the inUse from referencing a toolchain that is not installed
         if config.inUse == toolchain {
             config.inUse = nil
         }
         try config.save()
+
+        try Swiftly.currentPlatform.uninstall(toolchain)
         SwiftlyCore.print("done")
     }
 }