diff --git a/.envrc b/.envrc
index 3550a30f2..190b5b2b3 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1,2 @@
 use flake
+watch_file nix/*.nix
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 6bad57030..ad4016ff4 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v22
 
-      - uses: DeterminateSystems/update-flake-lock@v19
+      - uses: DeterminateSystems/update-flake-lock@v20
         with:
           commit-msg: "chore(nix): update lockfile"
           pr-title: "chore(nix): update lockfile"
diff --git a/flake.lock b/flake.lock
index 28ef60f30..5599efe16 100644
--- a/flake.lock
+++ b/flake.lock
@@ -91,11 +91,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1692463654,
-        "narHash": "sha256-F8hZmsQINI+S6UROM4jyxAMbQLtzE44pI8Nk6NtMdao=",
+        "lastModified": 1693060755,
+        "narHash": "sha256-KNsbfqewEziFJEpPR0qvVz4rx0x6QXxw1CcunRhlFdk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ca3c9ac9f4cdd4bea19f592b32bb59b74ab7d783",
+        "rev": "c66ccfa00c643751da2fd9290e096ceaa30493fc",
         "type": "github"
       },
       "original": {
diff --git a/launcher/Version.h b/launcher/Version.h
index 92bff9ba9..9c043b013 100644
--- a/launcher/Version.h
+++ b/launcher/Version.h
@@ -103,14 +103,8 @@ class Version {
 
         QString m_fullString;
 
-        [[nodiscard]] inline bool isAppendix() const
-        {
-            return m_stringPart.startsWith('+');
-        }
-        [[nodiscard]] inline bool isPreRelease() const
-        {
-            return m_stringPart.startsWith('-') && m_stringPart.length() > 1;
-        }
+        [[nodiscard]] inline bool isAppendix() const { return m_stringPart.startsWith('+'); }
+        [[nodiscard]] inline bool isPreRelease() const { return m_stringPart.startsWith('-') && m_stringPart.length() > 1; }
 
         inline bool operator==(const Section& other) const
         {
@@ -156,14 +150,8 @@ class Version {
             return m_fullString < other.m_fullString;
         }
 
-        inline bool operator!=(const Section& other) const
-        {
-            return !(*this == other);
-        }
-        inline bool operator>(const Section& other) const
-        {
-            return !(*this < other || *this == other);
-        }
+        inline bool operator!=(const Section& other) const { return !(*this == other); }
+        inline bool operator>(const Section& other) const { return !(*this < other || *this == other); }
     };
 
    private:
diff --git a/launcher/launch/LogModel.h b/launcher/launch/LogModel.h
index ba2e4054a..18e51d7e3 100644
--- a/launcher/launch/LogModel.h
+++ b/launcher/launch/LogModel.h
@@ -30,7 +30,7 @@ class LogModel : public QAbstractListModel {
 
     enum Roles { LevelRole = Qt::UserRole };
 
-    private /* types */:
+   private /* types */:
     struct entry {
         MessageLevel::Enum level;
         QString line;
diff --git a/launcher/minecraft/mod/ModFolderModel.cpp b/launcher/minecraft/mod/ModFolderModel.cpp
index 280e70d7b..eed35615c 100644
--- a/launcher/minecraft/mod/ModFolderModel.cpp
+++ b/launcher/minecraft/mod/ModFolderModel.cpp
@@ -51,8 +51,13 @@
 
 #include "Application.h"
 
+#include "Json.h"
 #include "minecraft/mod/tasks/LocalModParseTask.h"
+#include "minecraft/mod/tasks/LocalModUpdateTask.h"
 #include "minecraft/mod/tasks/ModFolderLoadTask.h"
+#include "modplatform/ModIndex.h"
+#include "modplatform/flame/FlameAPI.h"
+#include "modplatform/flame/FlameModIndex.h"
 
 ModFolderModel::ModFolderModel(const QString& dir, BaseInstance* instance, bool is_indexed, bool create_dir)
     : ResourceFolderModel(QDir(dir), instance, nullptr, create_dir), m_is_indexed(is_indexed)
@@ -309,3 +314,47 @@ void ModFolderModel::onParseSucceeded(int ticket, QString mod_id)
 
     emit dataChanged(index(row), index(row, columnCount(QModelIndex()) - 1));
 }
+
+static const FlameAPI flameAPI;
+bool ModFolderModel::installMod(QString file_path, ModPlatform::IndexedVersion& vers)
+{
+    if (vers.addonId.isValid()) {
+        ModPlatform::IndexedPack pack{
+            vers.addonId,
+            ModPlatform::ResourceProvider::FLAME,
+        };
+
+        QEventLoop loop;
+
+        auto response = std::make_shared<QByteArray>();
+        auto job = flameAPI.getProject(vers.addonId.toString(), response);
+
+        QObject::connect(job.get(), &Task::failed, [&loop] { loop.quit(); });
+        QObject::connect(job.get(), &Task::aborted, &loop, &QEventLoop::quit);
+        QObject::connect(job.get(), &Task::succeeded, [response, this, &vers, &loop, &pack] {
+            QJsonParseError parse_error{};
+            QJsonDocument doc = QJsonDocument::fromJson(*response, &parse_error);
+            if (parse_error.error != QJsonParseError::NoError) {
+                qWarning() << "Error while parsing JSON response for mod info at " << parse_error.offset
+                           << " reason: " << parse_error.errorString();
+                qDebug() << *response;
+                return;
+            }
+            try {
+                auto obj = Json::requireObject(Json::requireObject(doc), "data");
+                FlameMod::loadIndexedPack(pack, obj);
+            } catch (const JSONValidationError& e) {
+                qDebug() << doc;
+                qWarning() << "Error while reading mod info: " << e.cause();
+            }
+            LocalModUpdateTask update_metadata(indexDir(), pack, vers);
+            QObject::connect(&update_metadata, &Task::finished, &loop, &QEventLoop::quit);
+            update_metadata.start();
+        });
+
+        job->start();
+
+        loop.exec();
+    }
+    return ResourceFolderModel::installResource(file_path);
+}
diff --git a/launcher/minecraft/mod/ModFolderModel.h b/launcher/minecraft/mod/ModFolderModel.h
index 06fd78149..f1890e87e 100644
--- a/launcher/minecraft/mod/ModFolderModel.h
+++ b/launcher/minecraft/mod/ModFolderModel.h
@@ -48,6 +48,7 @@
 
 #include "minecraft/mod/tasks/LocalModParseTask.h"
 #include "minecraft/mod/tasks/ModFolderLoadTask.h"
+#include "modplatform/ModIndex.h"
 
 class LegacyInstance;
 class BaseInstance;
@@ -75,6 +76,7 @@ class ModFolderModel : public ResourceFolderModel {
     [[nodiscard]] Task* createParseTask(Resource&) override;
 
     bool installMod(QString file_path) { return ResourceFolderModel::installResource(file_path); }
+    bool installMod(QString file_path, ModPlatform::IndexedVersion& vers);
     bool uninstallMod(const QString& filename, bool preserve_metadata = false);
 
     /// Deletes all the selected mods
diff --git a/launcher/ui/MainWindow.cpp b/launcher/ui/MainWindow.cpp
index 7900e6c45..7a197f622 100644
--- a/launcher/ui/MainWindow.cpp
+++ b/launcher/ui/MainWindow.cpp
@@ -118,7 +118,9 @@
 #include "minecraft/mod/TexturePackFolderModel.h"
 #include "minecraft/mod/tasks/LocalResourceParse.h"
 
+#include "modplatform/ModIndex.h"
 #include "modplatform/flame/FlameAPI.h"
+#include "modplatform/flame/FlameModIndex.h"
 
 #include "KonamiCode.h"
 
@@ -923,6 +925,7 @@ void MainWindow::processURLs(QList<QUrl> urls)
         if (url.scheme().isEmpty())
             url.setScheme("file");
 
+        ModPlatform::IndexedVersion version;
         QMap<QString, QString> extra_info;
         QUrl local_url;
         if (!url.isLocalFile()) {  // download the remote resource and identify
@@ -948,20 +951,19 @@ void MainWindow::processURLs(QList<QUrl> urls)
                 auto api = FlameAPI();
                 auto job = api.getFile(addonId, fileId, array);
 
-                QString resource_name;
-
                 connect(job.get(), &Task::failed, this,
                         [this](QString reason) { CustomMessageBox::selectable(this, tr("Error"), reason, QMessageBox::Critical)->show(); });
-                connect(job.get(), &Task::succeeded, this, [this, array, addonId, fileId, &dl_url, &resource_name] {
+                connect(job.get(), &Task::succeeded, this, [this, array, addonId, fileId, &dl_url, &version] {
                     qDebug() << "Returned CFURL Json:\n" << array->toStdString().c_str();
                     auto doc = Json::requireDocument(*array);
                     auto data = Json::ensureObject(Json::ensureObject(doc.object()), "data");
                     // No way to find out if it's a mod or a modpack before here
                     // And also we need to check if it ends with .zip, instead of any better way
-                    auto fileName = Json::ensureString(data, "fileName");
+                    version = FlameMod::loadIndexedPackVersion(data);
+                    auto fileName = version.fileName;
 
                     // Have to use ensureString then use QUrl to get proper url encoding
-                    dl_url = QUrl(Json::ensureString(data, "downloadUrl", "", "downloadUrl"));
+                    dl_url = QUrl(version.downloadUrl);
                     if (!dl_url.isValid()) {
                         CustomMessageBox::selectable(
                             this, tr("Error"),
@@ -972,7 +974,6 @@ void MainWindow::processURLs(QList<QUrl> urls)
                     }
 
                     QFileInfo dl_file(dl_url.fileName());
-                    resource_name = Json::ensureString(data, "displayName", dl_file.completeBaseName(), "displayName");
                 });
 
                 {  // drop stack
@@ -1047,7 +1048,7 @@ void MainWindow::processURLs(QList<QUrl> urls)
                 qWarning() << "Importing of Data Packs not supported at this time. Ignoring" << localFileName;
                 break;
             case PackedResourceType::Mod:
-                minecraftInst->loaderModList()->installMod(localFileName);
+                minecraftInst->loaderModList()->installMod(localFileName, version);
                 break;
             case PackedResourceType::ShaderPack:
                 minecraftInst->shaderPackList()->installResource(localFileName);
diff --git a/launcher/ui/MainWindow.h b/launcher/ui/MainWindow.h
index b6f45da2e..0b6144522 100644
--- a/launcher/ui/MainWindow.h
+++ b/launcher/ui/MainWindow.h
@@ -151,10 +151,7 @@ class MainWindow : public QMainWindow {
     void deleteGroup();
     void undoTrashInstance();
 
-    inline void on_actionExportInstance_triggered()
-    {
-        on_actionExportInstanceZip_triggered();
-    }
+    inline void on_actionExportInstance_triggered() { on_actionExportInstanceZip_triggered(); }
     void on_actionExportInstanceZip_triggered();
     void on_actionExportInstanceMrPack_triggered();
     void on_actionExportInstanceFlamePack_triggered();
diff --git a/launcher/ui/pages/global/JavaPage.cpp b/launcher/ui/pages/global/JavaPage.cpp
index 45d8f0180..ac50319ec 100644
--- a/launcher/ui/pages/global/JavaPage.cpp
+++ b/launcher/ui/pages/global/JavaPage.cpp
@@ -185,6 +185,7 @@ void JavaPage::updateThresholds()
 {
     auto sysMiB = Sys::getSystemRam() / Sys::mebibyte;
     unsigned int maxMem = ui->maxMemSpinBox->value();
+    unsigned int minMem = ui->minMemSpinBox->value();
 
     QString iconName;
 
@@ -194,6 +195,9 @@ void JavaPage::updateThresholds()
     } else if (maxMem > (sysMiB * 0.9)) {
         iconName = "status-yellow";
         ui->labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation approaches your system memory capacity."));
+    } else if (maxMem < minMem) {
+        iconName = "status-yellow";
+        ui->labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation is smaller than the minimum value"));
     } else {
         iconName = "status-good";
         ui->labelMaxMemIcon->setToolTip("");
diff --git a/launcher/ui/pages/instance/InstanceSettingsPage.cpp b/launcher/ui/pages/instance/InstanceSettingsPage.cpp
index d5dbb80b8..7aa6bd322 100644
--- a/launcher/ui/pages/instance/InstanceSettingsPage.cpp
+++ b/launcher/ui/pages/instance/InstanceSettingsPage.cpp
@@ -478,6 +478,7 @@ void InstanceSettingsPage::updateThresholds()
 {
     auto sysMiB = Sys::getSystemRam() / Sys::mebibyte;
     unsigned int maxMem = ui->maxMemSpinBox->value();
+    unsigned int minMem = ui->minMemSpinBox->value();
 
     QString iconName;
 
@@ -487,6 +488,9 @@ void InstanceSettingsPage::updateThresholds()
     } else if (maxMem > (sysMiB * 0.9)) {
         iconName = "status-yellow";
         ui->labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation approaches your system memory capacity."));
+    } else if (maxMem < minMem) {
+        iconName = "status-yellow";
+        ui->labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation is smaller than the minimum value"));
     } else {
         iconName = "status-good";
         ui->labelMaxMemIcon->setToolTip("");
diff --git a/launcher/ui/pages/instance/ServersPage.cpp b/launcher/ui/pages/instance/ServersPage.cpp
index 6bf802e63..2142e6c9f 100644
--- a/launcher/ui/pages/instance/ServersPage.cpp
+++ b/launcher/ui/pages/instance/ServersPage.cpp
@@ -354,14 +354,8 @@ class ServersModel : public QAbstractListModel {
         }
     }
 
-    virtual int rowCount(const QModelIndex& parent = QModelIndex()) const override
-    {
-        return parent.isValid() ? 0 : m_servers.size();
-    }
-    int columnCount(const QModelIndex& parent) const override
-    {
-        return parent.isValid() ? 0 : COLUMN_COUNT;
-    }
+    virtual int rowCount(const QModelIndex& parent = QModelIndex()) const override { return parent.isValid() ? 0 : m_servers.size(); }
+    int columnCount(const QModelIndex& parent) const override { return parent.isValid() ? 0 : COLUMN_COUNT; }
 
     Server* at(int index)
     {
@@ -445,10 +439,7 @@ class ServersModel : public QAbstractListModel {
         qDebug() << "Changed:" << path;
         load();
     }
-    void fileChanged(const QString& path)
-    {
-        qDebug() << "Changed:" << path;
-    }
+    void fileChanged(const QString& path) { qDebug() << "Changed:" << path; }
 
    private slots:
     void save_internal()
@@ -492,10 +483,7 @@ class ServersModel : public QAbstractListModel {
         m_saveTimer.stop();
     }
 
-    bool saveIsScheduled() const
-    {
-        return m_dirty;
-    }
+    bool saveIsScheduled() const { return m_dirty; }
 
     void updateFSObserver()
     {
diff --git a/launcher/ui/widgets/JavaSettingsWidget.cpp b/launcher/ui/widgets/JavaSettingsWidget.cpp
index 42279a663..d2d921918 100644
--- a/launcher/ui/widgets/JavaSettingsWidget.cpp
+++ b/launcher/ui/widgets/JavaSettingsWidget.cpp
@@ -186,12 +186,20 @@ QString JavaSettingsWidget::javaPath() const
 
 int JavaSettingsWidget::maxHeapSize() const
 {
-    return m_maxMemSpinBox->value();
+    auto min = m_minMemSpinBox->value();
+    auto max = m_maxMemSpinBox->value();
+    if (max < min)
+        max = min;
+    return max;
 }
 
 int JavaSettingsWidget::minHeapSize() const
 {
-    return m_minMemSpinBox->value();
+    auto min = m_minMemSpinBox->value();
+    auto max = m_maxMemSpinBox->value();
+    if (min > max)
+        min = max;
+    return min;
 }
 
 bool JavaSettingsWidget::permGenEnabled() const
@@ -214,17 +222,9 @@ void JavaSettingsWidget::memoryValueChanged(int)
     if (obj == m_minMemSpinBox && min != observedMinMemory) {
         observedMinMemory = min;
         actuallyChanged = true;
-        if (min > max) {
-            observedMaxMemory = min;
-            m_maxMemSpinBox->setValue(min);
-        }
     } else if (obj == m_maxMemSpinBox && max != observedMaxMemory) {
         observedMaxMemory = max;
         actuallyChanged = true;
-        if (min > max) {
-            observedMinMemory = max;
-            m_minMemSpinBox->setValue(max);
-        }
     } else if (obj == m_permGenSpinBox && permgen != observedPermGenMemory) {
         observedPermGenMemory = permgen;
         actuallyChanged = true;
@@ -361,8 +361,8 @@ void JavaSettingsWidget::checkJavaPath(const QString& path)
     setJavaStatus(JavaStatus::Pending);
     m_checker.reset(new JavaChecker());
     m_checker->m_path = path;
-    m_checker->m_minMem = m_minMemSpinBox->value();
-    m_checker->m_maxMem = m_maxMemSpinBox->value();
+    m_checker->m_minMem = minHeapSize();
+    m_checker->m_maxMem = maxHeapSize();
     if (m_permGenSpinBox->isVisible()) {
         m_checker->m_permGen = m_permGenSpinBox->value();
     }
@@ -415,6 +415,9 @@ void JavaSettingsWidget::updateThresholds()
     } else if (observedMaxMemory > (m_availableMemory * 0.9)) {
         iconName = "status-yellow";
         m_labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation approaches your system memory capacity."));
+    } else if (observedMaxMemory < observedMinMemory) {
+        iconName = "status-yellow";
+        m_labelMaxMemIcon->setToolTip(tr("Your maximum memory allocation is smaller than the minimum value"));
     } else {
         iconName = "status-good";
         m_labelMaxMemIcon->setToolTip("");
diff --git a/libraries/LocalPeer/src/LocalPeer.cpp b/libraries/LocalPeer/src/LocalPeer.cpp
index ab528c2a1..bd407042f 100644
--- a/libraries/LocalPeer/src/LocalPeer.cpp
+++ b/libraries/LocalPeer/src/LocalPeer.cpp
@@ -220,5 +220,5 @@ void LocalPeer::receiveConnection()
     socket->waitForBytesWritten(1000);
     socket->waitForDisconnected(1000);  // make sure client reads ack
     delete socket;
-    emit messageReceived(uMsg);  //### (might take a long time to return)
+    emit messageReceived(uMsg);  // ### (might take a long time to return)
 }
diff --git a/nix/dev.nix b/nix/dev.nix
index c39e15653..a9c1dc65d 100644
--- a/nix/dev.nix
+++ b/nix/dev.nix
@@ -23,18 +23,13 @@
             types_or = ["c" "c++" "java" "json" "objective-c"];
           };
         };
+
+        tools.clang-tools = pkgs.clang-tools_16;
       };
     };
 
     devShells.default = pkgs.mkShell {
       inherit (self.checks.${system}.pre-commit-check) shellHook;
-      packages = with pkgs; [
-        nodePackages.markdownlint-cli
-        alejandra
-        deadnix
-        clang-tools
-        nil
-      ];
 
       inputsFrom = [self.packages.${system}.prismlauncher-unwrapped];
       buildInputs = with pkgs; [ccache ninja];
diff --git a/nix/package.nix b/nix/package.nix
index 1dbadd405..074214c4b 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -1,6 +1,7 @@
 {
   lib,
   stdenv,
+  canonicalize-jars-hook,
   cmake,
   cmark,
   Cocoa,
@@ -26,7 +27,7 @@ assert lib.assertMsg (stdenv.isLinux || !gamemodeSupport) "gamemodeSupport is on
 
     src = lib.cleanSource self;
 
-    nativeBuildInputs = [extra-cmake-modules cmake jdk17 ninja];
+    nativeBuildInputs = [extra-cmake-modules cmake jdk17 ninja canonicalize-jars-hook];
     buildInputs =
       [
         qtbase
diff --git a/tests/FileSystem_test.cpp b/tests/FileSystem_test.cpp
index e19410423..1d3cee85f 100644
--- a/tests/FileSystem_test.cpp
+++ b/tests/FileSystem_test.cpp
@@ -353,10 +353,7 @@ class FileSystemTest : public QObject {
         }
     }
 
-    void test_getDesktop()
-    {
-        QCOMPARE(FS::getDesktopDir(), QStandardPaths::writableLocation(QStandardPaths::DesktopLocation));
-    }
+    void test_getDesktop() { QCOMPARE(FS::getDesktopDir(), QStandardPaths::writableLocation(QStandardPaths::DesktopLocation)); }
 
     void test_link()
     {