Don't rebuild BSAs that haven't changed

Wabbajack.Lib/AInstaller.cs

@@ -372,6 +372,40 @@ namespace Wabbajack.Lib
             
             var indexed = ModList.Directives.ToDictionary(d => d.To);
 
+            var bsasToBuild = await ModList.Directives
+                .OfType<CreateBSA>()
+                .PMap(Queue, UpdateTracker, async b =>
+                {
+                    var file = OutputFolder.Combine(b.To);
+                    if (!file.Exists)
+                        return (true, b);
+                    return (b.Hash != await file.FileHashCachedAsync(), b);
+                });
+
+            var bsaIDsToRemove = bsasToBuild
+                .Where(b => b.Item1 == false).Select(t => t.b.TempID).ToHashSet();
+
+            var bsaPathsToNotBuild = bsasToBuild
+                .Where(b => b.Item1 == false).Select(t => t.b.To.RelativeTo(OutputFolder))
+                .ToHashSet();
+
+            indexed = indexed.Values
+                .Where(d =>
+                {
+                    switch (d)
+                    {
+                        case CreateBSA bsa:
+                            return !bsaIDsToRemove.Contains(bsa.TempID);
+                        case FromArchive a when a.To.StartsWith($"{Consts.BSACreationDir}"):
+                        {
+                            return !bsaIDsToRemove.Any(b =>
+                                a.To.RelativeTo(OutputFolder).InFolder(OutputFolder.Combine(Consts.BSACreationDir, b)));
+                        }
+                        default:
+                            return true;
+                    }
+                }).ToDictionary(d => d.To);
+
 
             var profileFolder = OutputFolder.Combine("profiles");
             var savePath = (RelativePath)"saves";
@@ -388,6 +422,9 @@ namespace Wabbajack.Lib
                     
                     if (NoDeleteRegex.IsMatch(f.ToString()))
                         return;
+
+                    if (bsaPathsToNotBuild.Contains(f))
+                        return;
                         
                     Utils.Log($"Deleting {relativeTo} it's not part of this ModList");
                     await f.DeleteAsync();

Wabbajack.Lib/MO2Installer.cs

@@ -345,6 +345,8 @@ namespace Wabbajack.Lib
                 streams.Do(s => s.Dispose());
 
                 await sourceDir.DeleteDirectory();
+                // Write the expected hash so we ignore compression changes
+                OutputFolder.Combine(bsa.To).FileHashWriteCache(bsa.Hash);
 
                 if (UseCompression)
                     await OutputFolder.Combine(bsa.To).Compact(FileCompaction.Algorithm.XPRESS16K);

buildall.bat

@@ -6,4 +6,7 @@ dotnet publish c:\oss\Wabbajack\Wabbajack.CLI\Wabbajack.CLI.csproj --runtime win
 "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /t http://timestamp.sectigo.com M:\Games\wabbajack_files\launcher\Wabbajack.exe
 "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /t http://timestamp.sectigo.com M:\Games\wabbajack_files\app\Wabbajack.exe
 "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /t http://timestamp.sectigo.com M:\Games\wabbajack_files\app\wabbajack-cli.exe
-"C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /t http://timestamp.sectigo.com M:\Games\wabbajack_files\cli\wabbajack-cli.exe
+"C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /t http://timestamp.sectigo.com M:\Games\wabbajack_files\cli\wabbajack-cli.exe
+"c:\Program Files\7-Zip\7z.exe" a m:\Games\wabbajack_files\app.zip m:\Games\wabbajack_files\app\*
+"c:\Program Files\7-Zip\7z.exe" a m:\Games\wabbajack_files\cli-3.0.zip m:\Games\wabbajack_files\cli\*
+copy m:\Games\wabbajack_files\launcher\Wabbajack.exe m:\Games\wabbajack_files\Wabbajack.exe