ProjectExplorer: Report project-specific kit errors/warnings

Report project-specific warnings about the kit used in Project Mode.
E.g. a python project should not complain about missing toolchains,
while a qmake project should.

Change-Id: I5ce6742683cdeffc7ff3f1a3e8f0b89aee9aa0b4
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

17 files changed, 119 insertions, 105 deletions

diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.cpp b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
index 9b86aeb3a4..5e9033df6a 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
@@ -363,14 +363,16 @@ bool CMakeProject::knowsAllBuildExecutables() const
     return false;
 }
 
-bool CMakeProject::supportsKit(const Kit *k, QString *errorMessage) const
+QList<Task> CMakeProject::projectIssues(const Kit *k) const
 {
-    if (!CMakeKitInformation::cmakeTool(k)) {
-        if (errorMessage)
-            *errorMessage = tr("No cmake tool set.");
-        return false;
-    }
-    return true;
+    QList<Task> result = Project::projectIssues(k);
+
+    if (!CMakeKitInformation::cmakeTool(k))
+        result.append(createProjectTask(Task::TaskType::Error, tr("No cmake tool set.")));
+    if (ToolChainKitInformation::toolChains(k).isEmpty())
+        result.append(createProjectTask(Task::TaskType::Warning, tr("No compilers set in kit.")));
+
+    return result;
 }
 
 void CMakeProject::runCMake()
diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.h b/src/plugins/cmakeprojectmanager/cmakeproject.h
index 7165f68be5..7f0c7bf4df 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.h
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.h
@@ -67,7 +67,7 @@ public:
 
     bool knowsAllBuildExecutables() const final;
 
-    bool supportsKit(const ProjectExplorer::Kit *k, QString *errorMessage = nullptr) const final;
+    QList<ProjectExplorer::Task> projectIssues(const ProjectExplorer::Kit *k) const final;
 
     void runCMake();
     void runCMakeAndScanProjectTree();
diff --git a/src/plugins/nim/project/nimproject.cpp b/src/plugins/nim/project/nimproject.cpp
index 60de1d3f48..6ad9879469 100644
--- a/src/plugins/nim/project/nimproject.cpp
+++ b/src/plugins/nim/project/nimproject.cpp
@@ -154,20 +154,16 @@ void NimProject::updateProject()
     emitParsingFinished(true);
 }
 
-bool NimProject::supportsKit(const Kit *k, QString *errorMessage) const
+QList<Task> NimProject::projectIssues(const Kit *k) const
 {
+    QList<Task> result = Project::projectIssues(k);
     auto tc = dynamic_cast<NimToolChain*>(ToolChainKitInformation::toolChain(k, Constants::C_NIMLANGUAGE_ID));
-    if (!tc) {
-        if (errorMessage)
-            *errorMessage = tr("No Nim compiler set.");
-        return false;
-    }
-    if (!tc->compilerCommand().exists()) {
-        if (errorMessage)
-            *errorMessage = tr("Nim compiler does not exist.");
-        return false;
-    }
-    return true;
+    if (!tc)
+        result.append(createProjectTask(Task::TaskType::Error, tr("No Nim compiler set.")));
+    if (!tc->compilerCommand().exists())
+        result.append(createProjectTask(Task::TaskType::Error, tr("Nim compiler does not exist.")));
+
+    return result;
 }
 
 FileNameList NimProject::nimFiles() const
diff --git a/src/plugins/nim/project/nimproject.h b/src/plugins/nim/project/nimproject.h
index 317e4eef81..4919005921 100644
--- a/src/plugins/nim/project/nimproject.h
+++ b/src/plugins/nim/project/nimproject.h
@@ -41,7 +41,7 @@ class NimProject : public ProjectExplorer::Project
 public:
     explicit NimProject(const Utils::FileName &fileName);
 
-    bool supportsKit(const ProjectExplorer::Kit *k, QString *errorMessage) const final;
+    QList<ProjectExplorer::Task> projectIssues(const ProjectExplorer::Kit *k) const final;
     Utils::FileNameList nimFiles() const;
     QVariantMap toMap() const final;
 
diff --git a/src/plugins/projectexplorer/buildconfiguration.cpp b/src/plugins/projectexplorer/buildconfiguration.cpp
index 4227ca4ae7..b58bea1e5c 100644
--- a/src/plugins/projectexplorer/buildconfiguration.cpp
+++ b/src/plugins/projectexplorer/buildconfiguration.cpp
@@ -407,7 +407,7 @@ bool IBuildConfigurationFactory::canHandle(const Target *target) const
     if (m_supportedProjectType.isValid() && m_supportedProjectType != target->project()->id())
         return false;
 
-    if (!target->project()->supportsKit(target->kit()))
+    if (containsType(target->project()->projectIssues(target->kit()), Task::TaskType::Error))
         return false;
 
     if (!supportsTargetDeviceType(DeviceTypeKitInformation::deviceTypeId(target->kit())))
diff --git a/src/plugins/projectexplorer/deployconfiguration.cpp b/src/plugins/projectexplorer/deployconfiguration.cpp
index 96a5bbaf3e..e1fca709cd 100644
--- a/src/plugins/projectexplorer/deployconfiguration.cpp
+++ b/src/plugins/projectexplorer/deployconfiguration.cpp
@@ -184,7 +184,7 @@ bool DeployConfigurationFactory::canHandle(Target *target) const
             return false;
     }
 
-    if (!target->project()->supportsKit(target->kit()))
+    if (containsType(target->project()->projectIssues(target->kit()), Task::TaskType::Error))
         return false;
 
     if (!m_supportedTargetDeviceTypes.isEmpty()) {
diff --git a/src/plugins/projectexplorer/kit.cpp b/src/plugins/projectexplorer/kit.cpp
index 55c460d881..f318ecfb82 100644
--- a/src/plugins/projectexplorer/kit.cpp
+++ b/src/plugins/projectexplorer/kit.cpp
@@ -112,7 +112,7 @@ public:
     int m_nestedBlockingLevel = 0;
     bool m_autodetected = false;
     bool m_sdkProvided = false;
-    bool m_isValid = true;
+    bool m_hasError = false;
     bool m_hasWarning = false;
     bool m_hasValidityInfo = false;
     bool m_mustNotify = false;
@@ -209,7 +209,7 @@ Kit *Kit::clone(bool keepName) const
     k->d->m_autodetected = false;
     k->d->m_data = d->m_data;
     // Do not clone m_fileSystemFriendlyName, needs to be unique
-    k->d->m_isValid = d->m_isValid;
+    k->d->m_hasError = d->m_hasError;
     k->d->m_cachedIcon = d->m_cachedIcon;
     k->d->m_iconPath = d->m_iconPath;
     k->d->m_sticky = d->m_sticky;
@@ -240,7 +240,7 @@ bool Kit::isValid() const
     if (!d->m_hasValidityInfo)
         validate();
 
-    return d->m_isValid;
+    return !d->m_hasError;
 }
 
 bool Kit::hasWarning() const
@@ -255,18 +255,13 @@ QList<Task> Kit::validate() const
 {
     QList<Task> result;
     QList<KitInformation *> infoList = KitManager::kitInformation();
-    d->m_isValid = true;
-    d->m_hasWarning = false;
-    foreach (KitInformation *i, infoList) {
+    for (KitInformation *i : infoList) {
         QList<Task> tmp = i->validate(this);
-        foreach (const Task &t, tmp) {
-            if (t.type == Task::Error)
-                d->m_isValid = false;
-            if (t.type == Task::Warning)
-                d->m_hasWarning = true;
-        }
         result.append(tmp);
     }
+    d->m_hasError = containsType(result, Task::TaskType::Error);
+    d->m_hasWarning = containsType(result, Task::TaskType::Warning);
+
     Utils::sort(result);
     d->m_hasValidityInfo = true;
     return result;
diff --git a/src/plugins/projectexplorer/project.cpp b/src/plugins/projectexplorer/project.cpp
index 8a9f6e410a..14e47cba43 100644
--- a/src/plugins/projectexplorer/project.cpp
+++ b/src/plugins/projectexplorer/project.cpp
@@ -198,7 +198,9 @@ Project::Project(const QString &mimeType, const Utils::FileName &fileName,
     // Only set up containernode after d is set so that it will find the project directory!
     d->m_containerNode = std::make_unique<ContainerNode>(this);
 
-    setRequiredKitPredicate([this](const Kit *k) { return supportsKit(k); });
+    setRequiredKitPredicate([this](const Kit *k) {
+        return !containsType(projectIssues(k), Task::TaskType::Error);
+    });
 }
 
 Project::~Project()
@@ -317,11 +319,12 @@ Target *Project::target(Kit *k) const
     return Utils::findOrDefault(d->m_targets, Utils::equal(&Target::kit, k));
 }
 
-bool Project::supportsKit(const Kit *k, QString *errorMessage) const
+QList<Task> Project::projectIssues(const Kit *k) const
 {
-    Q_UNUSED(k);
-    Q_UNUSED(errorMessage);
-    return true;
+    QList<Task> result;
+    if (!k->isValid())
+        result.append(createProjectTask(Task::TaskType::Error, tr("Kit is not valid.")));
+    return {};
 }
 
 Target *Project::createTarget(Kit *k)
@@ -762,6 +765,11 @@ void Project::projectLoaded()
 {
 }
 
+Task Project::createProjectTask(Task::TaskType type, const QString &description)
+{
+    return Task(type, description, Utils::FileName(), -1, Core::Id());
+}
+
 Core::Context Project::projectContext() const
 {
     return Core::Context(d->m_id);
diff --git a/src/plugins/projectexplorer/project.h b/src/plugins/projectexplorer/project.h
index 6e51ffa827..8400ea6975 100644
--- a/src/plugins/projectexplorer/project.h
+++ b/src/plugins/projectexplorer/project.h
@@ -122,7 +122,7 @@ public:
     Target *activeTarget() const;
     Target *target(Core::Id id) const;
     Target *target(Kit *k) const;
-    virtual bool supportsKit(const Kit *k, QString *errorMessage = nullptr) const;
+    virtual QList<Task> projectIssues(const Kit *k) const;
 
     Target *createTarget(Kit *k);
     static bool copySteps(Target *sourceTarget, Target *newTarget);
@@ -238,6 +238,9 @@ protected:
     void setProjectLanguage(Core::Id id, bool enabled);
     virtual void projectLoaded(); // Called when the project is fully loaded.
 
+    static ProjectExplorer::Task createProjectTask(ProjectExplorer::Task::TaskType type,
+                                                   const QString &description);
+
 private:
     // The predicate used to select kits available in TargetSetupPage.
     void setRequiredKitPredicate(const Kit::Predicate &predicate);
diff --git a/src/plugins/projectexplorer/runconfiguration.cpp b/src/plugins/projectexplorer/runconfiguration.cpp
index 22365570ec..4f122f478e 100644
--- a/src/plugins/projectexplorer/runconfiguration.cpp
+++ b/src/plugins/projectexplorer/runconfiguration.cpp
@@ -540,7 +540,7 @@ bool RunConfigurationFactory::canHandle(Target *target) const
     const Project *project = target->project();
     Kit *kit = target->kit();
 
-    if (!project->supportsKit(kit))
+    if (containsType(target->project()->projectIssues(kit), Task::TaskType::Error))
         return false;
 
     if (!m_supportedProjectTypes.isEmpty())
diff --git a/src/plugins/projectexplorer/targetsettingspanel.cpp b/src/plugins/projectexplorer/targetsettingspanel.cpp
index c98e670eae..b14d574e85 100644
--- a/src/plugins/projectexplorer/targetsettingspanel.cpp
+++ b/src/plugins/projectexplorer/targetsettingspanel.cpp
@@ -40,6 +40,7 @@
 #include "session.h"
 #include "target.h"
 #include "targetsetuppage.h"
+#include "task.h"
 
 #include <app/app_version.h>
 
@@ -282,9 +283,12 @@ class TargetItem : public TypedTreeItem<TreeItem, TargetGroupItem>
 public:
     enum { DefaultPage = 0 }; // Build page.
 
-    TargetItem(Project *project, Id kitId)
-        : m_project(project), m_kitId(kitId)
+    TargetItem(Project *project, Id kitId, const QList<Task> &issues)
+        : m_project(project), m_kitId(kitId), m_kitIssues(issues)
     {
+        m_kitWarningForProject = containsType(m_kitIssues, Task::TaskType::Warning);
+        m_kitErrorsForProject = containsType(m_kitIssues, Task::TaskType::Error);
+
         updateSubItems();
     }
 
@@ -298,7 +302,8 @@ public:
     Qt::ItemFlags flags(int column) const override
     {
         Q_UNUSED(column)
-        return Qt::ItemFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
+        return m_kitErrorsForProject ? Qt::ItemFlags(0)
+                                     : Qt::ItemFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
     }
 
     QVariant data(int column, int role) const override
@@ -313,11 +318,11 @@ public:
         case Qt::DecorationRole: {
             const Kit *k = KitManager::kit(m_kitId);
             QTC_ASSERT(k, return QVariant());
+            if (m_kitErrorsForProject)
+                return kitIconWithOverlay(*k, IconOverlay::Error);
             if (!isEnabled())
                 return kitIconWithOverlay(*k, IconOverlay::Add);
-            if (!k->isValid())
-                return kitIconWithOverlay(*k, IconOverlay::Error);
-            if (k->hasWarning())
+            if (m_kitWarningForProject)
                 return kitIconWithOverlay(*k, IconOverlay::Warning);
             return k->icon();
         }
@@ -341,9 +346,12 @@ public:
             Kit *k = KitManager::kit(m_kitId);
             QTC_ASSERT(k, return QVariant());
             QString toolTip;
-            if (!isEnabled())
+            if (m_kitErrorsForProject)
+                toolTip = "<h3>" + tr("Kit is unsuited for Project") + "</h3>";
+            else if (!isEnabled())
                 toolTip = "<h3>" + tr("Click to activate:") + "</h3>";
-            toolTip += k->toHtml();
+            if (!m_kitIssues.isEmpty())
+                toolTip += toHtml(m_kitIssues);
             return toolTip;
         }
 
@@ -466,12 +474,15 @@ public:
         }
     }
 
-    bool isEnabled() const { return target() != 0; }
+    bool isEnabled() const { return target() != nullptr; }
 
 public:
     QPointer<Project> m_project; // Not owned.
     Id m_kitId;
-    int m_currentChild = DefaultPage; // Use run page by default.
+    int m_currentChild = DefaultPage;
+    bool m_kitErrorsForProject = false;
+    bool m_kitWarningForProject = false;
+    QList<Task> m_kitIssues;
 
 private:
     enum class IconOverlay {
@@ -526,10 +537,9 @@ public:
 
     BuildOrRunItem(Project *project, Id kitId, SubIndex subIndex)
         : m_project(project), m_kitId(kitId), m_subIndex(subIndex)
-    {
-    }
+    { }
 
-    ~BuildOrRunItem()
+    ~BuildOrRunItem() override
     {
         delete m_panel;
     }
@@ -769,7 +779,7 @@ TargetItem *TargetGroupItem::targetItem(Target *target) const
         Id needle = target->id(); // Unconfigured project have no active target.
         return findFirstLevelChild([needle](TargetItem *item) { return item->m_kitId == needle; });
     }
-    return 0;
+    return nullptr;
 }
 
 void TargetGroupItemPrivate::handleRemovedKit(Kit *kit)
@@ -786,8 +796,7 @@ void TargetGroupItemPrivate::handleUpdatedKit(Kit *kit)
 
 void TargetGroupItemPrivate::handleAddedKit(Kit *kit)
 {
-    if (m_project->supportsKit(kit))
-        q->appendChild(new TargetItem(m_project, kit->id()));
+    q->appendChild(new TargetItem(m_project, kit->id(), m_project->projectIssues(kit)));
 }
 
 void TargetItem::updateSubItems()
@@ -805,11 +814,9 @@ void TargetGroupItemPrivate::rebuildContents()
 {
     q->removeChildren();
 
-    const QList<Kit *> kits = KitManager::sortKits(KitManager::kits([this](const Kit *kit) {
-        return m_project->supportsKit(const_cast<Kit *>(kit));
-    }));
+    const QList<Kit *> kits = KitManager::sortKits(KitManager::kits());
     for (Kit *kit : kits)
-        q->appendChild(new TargetItem(m_project, kit->id()));
+        q->appendChild(new TargetItem(m_project, kit->id(), m_project->projectIssues(kit)));
 
     if (q->parent())
         q->parent()->setData(0, QVariant::fromValue(static_cast<TreeItem *>(q)),
diff --git a/src/plugins/projectexplorer/task.cpp b/src/plugins/projectexplorer/task.cpp
index 7adbbed74a..d076b3e349 100644
--- a/src/plugins/projectexplorer/task.cpp
+++ b/src/plugins/projectexplorer/task.cpp
@@ -25,13 +25,15 @@
 
 #include "task.h"
 
+#include "projectexplorerconstants.h"
+
 #include <app/app_version.h>
 #include <texteditor/textmark.h>
+
+#include <utils/algorithm.h>
 #include <utils/utilsicons.h>
 #include <utils/qtcassert.h>
 
-#include "projectexplorerconstants.h"
-
 #include <QTextStream>
 
 namespace ProjectExplorer
@@ -174,4 +176,9 @@ QString toHtml(const QList<Task> &issues)
     return result;
 }
 
+bool containsType(const QList<Task> &issues, Task::TaskType type)
+{
+    return Utils::contains(issues, [type](const Task &t) { return t.type == type; });
+}
+
 } // namespace ProjectExplorer
diff --git a/src/plugins/projectexplorer/task.h b/src/plugins/projectexplorer/task.h
index 7a29db5d4a..a0f9c168e7 100644
--- a/src/plugins/projectexplorer/task.h
+++ b/src/plugins/projectexplorer/task.h
@@ -99,6 +99,7 @@ uint PROJECTEXPLORER_EXPORT qHash(const Task &task);
 bool PROJECTEXPLORER_EXPORT operator<(const Task &a, const Task &b);
 
 QString PROJECTEXPLORER_EXPORT toHtml(const QList<Task> &issues);
+bool PROJECTEXPLORER_EXPORT containsType(const QList<Task> &issues, Task::TaskType);
 
 } //namespace ProjectExplorer
 
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index a64acfae5b..26e6217bbd 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -50,6 +50,7 @@
 #include <projectexplorer/deploymentdata.h>
 #include <projectexplorer/headerpath.h>
 #include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/projectexplorerconstants.h>
 #include <projectexplorer/runconfiguration.h>
 #include <projectexplorer/target.h>
 #include <projectexplorer/taskhub.h>
@@ -596,12 +597,14 @@ void QmakeProject::buildFinished(bool success)
         m_invalidateQmakeVfsContents = true;
 }
 
-bool QmakeProject::supportsKit(const Kit *k, QString *errorMessage) const
+QList<Task> QmakeProject::projectIssues(const Kit *k) const
 {
-    QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(k);
-    if (!version && errorMessage)
-        *errorMessage = tr("No Qt version set in kit.");
-    return version;
+    QList<Task> result = Project::projectIssues(k);
+    if (!QtSupport::QtKitInformation::qtVersion(k))
+        result.append(createProjectTask(Task::TaskType::Error, tr("No Qt version set in kit.")));
+    if (!ToolChainKitInformation::toolChain(k, ProjectExplorer::Constants::CXX_LANGUAGE_ID))
+        result.append(createProjectTask(Task::TaskType::Error, tr("No C++ compiler set in kit.")));
+    return result;
 }
 
 // Find the folder that contains a file with a certain name (recurse down)
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.h b/src/plugins/qmakeprojectmanager/qmakeproject.h
index 49b686bb7a..532618e6eb 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.h
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.h
@@ -60,7 +60,7 @@ public:
 
     QmakeProFile *rootProFile() const;
 
-    bool supportsKit(const ProjectExplorer::Kit *k, QString *errorMesage) const final;
+    QList<ProjectExplorer::Task> projectIssues(const ProjectExplorer::Kit *k) const final;
 
     QmakeProFileNode *rootProjectNode() const final;
 
diff --git a/src/plugins/qmlprojectmanager/qmlproject.cpp b/src/plugins/qmlprojectmanager/qmlproject.cpp
index 75efd242b0..47bc18e0fe 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.cpp
+++ b/src/plugins/qmlprojectmanager/qmlproject.cpp
@@ -275,52 +275,42 @@ void QmlProject::refreshTargetDirectory()
         updateDeploymentData(target);
 }
 
-bool QmlProject::supportsKit(const Kit *k, QString *errorMessage) const
+QList<Task> QmlProject::projectIssues(const Kit *k) const
 {
-    if (!k->isValid()) {
-        if (errorMessage)
-            *errorMessage = tr("Kit is not valid.");
-        return false;
-    }
+    QList<Task> result = Project::projectIssues(k);
+
+    const QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(k);
+    if (!version)
+        result.append(createProjectTask(Task::TaskType::Error, tr("No Qt version set in kit.")));
 
     IDevice::ConstPtr dev = DeviceKitInformation::device(k);
-    if (dev.isNull()) {
-        if (errorMessage)
-            *errorMessage = tr("Kit has no device.");
-        return false;
-    }
+    if (dev.isNull())
+        result.append(createProjectTask(Task::TaskType::Error, tr("Kit has no device.")));
 
-    QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(k);
-    if (!version) {
-        if (errorMessage)
-            *errorMessage = tr("No Qt version set in kit.");
-        return false;
-    }
-    if (version->qtVersion() < QtSupport::QtVersionNumber(5, 0, 0)) {
-        if (errorMessage)
-            *errorMessage = tr("Qt version is too old.");
-        return false;
-    }
+    if (version && version->qtVersion() < QtSupport::QtVersionNumber(5, 0, 0))
+        result.append(createProjectTask(Task::TaskType::Error, tr("Qt version is too old.")));
+
+    if (dev.isNull() || !version)
+        return result; // No need to check deeper than this
 
     if (dev->type() == ProjectExplorer::Constants::DESKTOP_DEVICE_TYPE) {
         if (version->type() == QtSupport::Constants::DESKTOPQT) {
-            if (static_cast<QtSupport::DesktopQtVersion *>(version)->qmlsceneCommand().isEmpty()) {
-                if (errorMessage)
-                    *errorMessage = tr("Qt version has no qmlscene command.");
-                return false;
+            if (static_cast<const QtSupport::DesktopQtVersion *>(version)->qmlsceneCommand().isEmpty()) {
+                result.append(createProjectTask(Task::TaskType::Error,
+                                                tr("Qt version has no qmlscene command.")));
             }
         } else {
             // Non-desktop Qt on a desktop device? We don't support that.
-            if (errorMessage)
-                *errorMessage = tr("Non-desktop Qt is used with a Desktop device.");
-            return false;
+            result.append(createProjectTask(Task::TaskType::Error,
+                                            tr("Non-desktop Qt is used with a Desktop device.")));
         }
+    } else {
+        // If not a desktop device, don't check the Qt version for qmlscene.
+        // The device is responsible for providing it and we assume qmlscene can be found
+        // in $PATH if it's not explicitly given.
     }
 
-    // If not a desktop device, don't check the Qt version for qmlscene.
-    // The device is responsible for providing it and we assume qmlscene can be found
-    // in $PATH if it's not explicitly given.
-    return true;
+    return result;
 }
 
 Project::RestoreResult QmlProject::fromMap(const QVariantMap &map, QString *errorMessage)
@@ -334,7 +324,9 @@ Project::RestoreResult QmlProject::fromMap(const QVariantMap &map, QString *erro
 
     if (!activeTarget()) {
         // find a kit that matches prerequisites (prefer default one)
-        const QList<Kit*> kits = KitManager::kits([this](const Kit *k) { return supportsKit(k, nullptr); });
+        const QList<Kit*> kits = KitManager::kits([this](const Kit *k) {
+            return !containsType(projectIssues(k), Task::TaskType::Error);
+        });
 
         if (!kits.isEmpty()) {
             Kit *kit = kits.contains(KitManager::defaultKit()) ? KitManager::defaultKit() : kits.first();
diff --git a/src/plugins/qmlprojectmanager/qmlproject.h b/src/plugins/qmlprojectmanager/qmlproject.h
index cd4fc21b29..075bd77a44 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.h
+++ b/src/plugins/qmlprojectmanager/qmlproject.h
@@ -48,7 +48,7 @@ public:
     explicit QmlProject(const Utils::FileName &filename);
     ~QmlProject() override;
 
-    bool supportsKit(const ProjectExplorer::Kit *k, QString *errorMessage = nullptr) const final;
+    QList<ProjectExplorer::Task> projectIssues(const ProjectExplorer::Kit *k) const final;
 
     bool validProjectFile() const;