Building standalone IDEs for your languages
The term standalone IDE refers to a stripped down version of the IDE that only contains those artifacts that are necessary for a given business purpose. Standalone IDEs provide a convenient way to distribute DSLs to the end users, who will be able to use the languages including all the IDE support, refactorings and code analysis prepared by language designers in the comfort of a dedicated IDE. All the distracting language-design-related functionality and unnecessary languages will have been removed.
Once you have designed your languages, MPS can help you build a stripped down version of MPS that only contains those artifacts that are necessary to use these domain-specific languages. Various aspects of MPS can be removed or customized to deliver a custom user experience for a given group of users. This article describes how.
In particular, the following aspects of MPS can be customized:
various icons, slogans, splash screens and images
the help URL
the set of languages available to the users
the set of plugins available in MPS
To build a custom RCP version of MPS, you have to create a solution that contains a so-called build script. A build script is written in MPS' build language, which is optimized for building RCP applications (as well as IntelliJ and MPS plugins). When running the generator for this build script, MPS generates an ant file that creates the actual RCP distribution.
In this document we describe the development of an RCP build scripts for the robot Kaja sample that is bundled with MPS distributions. You can open the project in MPS and follow the instructions described here.
tip
If you want to see an example of a non-trivial project with an advanced build script that handles a complex project with several languages and runtime libraries, creates a standalone IDE and bundles the capabilities to run generated Java code, check out the Voice Menu project.
The preferred way to create the necessary build scripts is to run the Build Solution Wizard on your current project. You start it from the Project View tool window:
The wizard will create a new solution and a model to hold the scripts and set the necessary imports as well as used languages. You can instruct the wizard to reuse an existing solution or a model, instead of creating new ones.
You'll then need to select the Standalone IDE option from the three available options:
On the last page of the wizard, you de-select the modules that should not be made part of the IDE. Typically you skip the sandbox modules and keep the languages as well as plugin and runtime solutions.
The new solution should now be listed in the Project View and should hold two new build scripts:
The dependencies have been also set properly:
Alternatively you could create the scripts manually. You'd have to create a new solution with a new model inside. In the model, configure the used languages
jetbrains.mps.build
jetbrains.mps.build.mps
Also import the jetbrains.mps.ide.build model. You can now create a new build project in the model (the name is confusing: it is not actually a new build project, just a build script).
A build scripts contains several sections, which we can observe on an empty build script:
let's look at the various sections of a build script:
base directory The base directory defines an absolute path relative to which all other paths are specified. By default, this is the directory in which the resulting ant file will be generated, and in which it will be executed.
use plugins The build language itself can be extended via plugins (Note that these are not the plugins that make up MPS itself; those will be configured later). These plugins contribute additional build language syntax. Typically, the java and mps plugins are required. We will use syntax contributed by these plugins below.
macros Macros are essentially name-value pairs. In the Macros section, these names are defined and values are assigned. In the remainder of the build script these macro variables will be used. MPS supports two kinds of Macros: var macros are strings and can be assigned any value. folder represents paths relative to the base directory defined above and based on other Macros. Note that MPS provides code completion for the path components in folder macros.
dependencies This section defines dependencies to other build scripts. MPS bundles a set of build scripts (e.g. buildStandalone, buildWorkbench or buildMPS). By establishing a dependency to any one of them, the structures defined in that references build script can be used in the referencing build script. For example, the macros defined in the referenced build scripts can be used.
project structure This section defines the actual contents of the to-be-built RCP application. Such contents may be MPS modules (languages, solutions, devkits), Java libraries, IDEA branding and plugins.
default layout This section defines the files that are output, it creates the directory, file and JAR structure of the new RCP distribution. It references and includes the artifacts defined in the project structure section and in other build scripts this one depends on.
The wizard created two builds scripts, each of which serves a separate purpose:
Kajak - generates the modules, compiles the generated sources and packages them into an IDEA plugin (a plugin for the IntelliJ IDEA platform)
KajakDistribution - creates platform-specific distributions out of the artefacts created by Kajak
Lets focus on the Kajak build script first.
The default name of the ant xml file to generate from each MPS build script is build.xml. It is advisable to change the name so that you avoid clashes between multiple build scripts:
Specifies the directory, into which the build script will be generated.
The build language has packaged its capabilities into plugins. The plugins used in the build script are listed in its use plugins section.
java - contains the capability to compile Java sources
mps - contains the capability to generate MPS models
module-tests - adds capability to run tests in the build script (you need to import the jetbrains.mps.build.mps.tests language)
The wizard has already pre-set java and mps for us.
We should define a couple of macros to reuse across the script. The first two represent string variables that we will use in the build, the set of folders represents the directory for MPS itself as well as the two root directories where the MPS-bundled languages are stored. These languages will become part of the RCP distribution. Note how all of these folders are relative to the base directory.
macros:
var date = date 20150422
var build.number = Kajak-139.SNAPSHOT
var version.major = 2020
var version.minor = 2
var version.bugfixNr = <empty>
var version.eap = EAP
folder mps_home = ./../../../../Applications/MPS 3.2.app/ContentsNote that you can leave a macro undefined (i.e. just specify the name) and then define it either in the MPS Path Variables section of the Project Settings dialog, or when you call ant by using a property definition:
ant -Dsome.variable=a.valueNext, we define the dependencies. Dependencies indicate, on which other build scripts and platforms this script depends.
We need dependencies to mpsStandalone (it represents the minimal set of a standalone MPS installation) and optionally also mpsMakePlugin that enables creating build scripts in the standalone IDE, mpsDebuggerPlugin (because the robot Kaja sample requires debugger and Java execution integration) and mps ExecutionPlugin (because one the robot Kaja sample languages uses the execution framework to run an external executable). Most RCPs will likely just use mps Standalone.
dependencies:
mpsStandalone (artifacts location $mps_home)
mpsMakePlugin (artifacts location $mps_home/plugins)
mpsDebuggerPlugin (artifacts location $mps_home/plugins)
mpsExecutionPlugin (artifacts location $mps_home/plugins)The artifacts location specifies from where the artifacts will be copied. The build scripts work by copying code from an existing MPS installation, so you don't have to check out the MPS sources. The artifacts location should hence be pointing to the MPS home directory.
The plugins specified in the use plugins section influence the options available here. With java , mps and module-tests plugins enabled we get the following ones:
generator options - configure the generator
idea branding - configure the visual aspect of standalone IDEs, such as icons, splash-screens, urls, images and other
idea plugin - details the information to hook the generated artefacts into the underlying IntelliJ IDEA platform
Java library - groups jars and classes so they could be referred to as a unit
Java module - groups Java sources so they could be referred to as a unit
Java options - configures the java compiler process
mps group - groups MPS modules (solutions, languages, devkits) so that they could be referred to as a unit
solution - represents a solution
language - represents a language
devkit - represents a devkit
In the project structure we start with the branding. The idea branding section supports the definition of all kinds of icons, splash screens and the like. It is a good idea to take those from the MPS distribution and modify the pictures to suit your needs, while retaining the sizes and transparency values. Notice that the Version property holds a structured value. You can also specify a help file and an update website.
idea branding Kajak
codename Kajak
company <no company>
Version
${version.major}.${version.minor} ${version.bugfixNr} ${version.eap}
codename (optional) <empty>
full name Kajak
build number ${build.number}, date ${date}
icons
16x16 ./icons/MPS16.png
32x32 ./icons/MPS32.png
32x32 opaque ./icons/MPS32.png
128x128 <no icon128>
splash screen ./icons/splash.png textcolor 002387
about screen ./icons/about.png
dialog image ./icons/dialogImage.png
welcome screen
caption ./icons/caption.png
slogan ./icons/slogan.png
logo ./icons/logo.png
<no updateWebsite>
plugins <no plugins>
whats new <no whatsnew>
<no stats>
<no help>
feedback url <no feedbackUrl>In the sample we have copied the MPS icons into the ./icons folder and changed them accordingly without changing the names — this is why most of them start with mps.
Next we define an idea plugin that contains the languages and solutions to bundle. An idea plugin is a plugin to the IDEA platform on which MPS is built.
idea plugin Kajak
name Kajak
short (folder) name Kajak
description <no description>
version 1.0
<< no vendor >>
content:
Kajak
dependencies:
jetbrains.mps.core
<< ... >>You can define a name and a version, dependencies to other plugins as well as the actual contents. Whenever your RCP contains languages, you will need jetbrains.mps.core because it provides things like BaseConcept or the INamedConcept interface. The Kajak entry in the contents is a reference to an mps group defined below. An mps group is a group of MPS artifacts. Since we have included the mps plugin (at the very top of the build script) we can use MPS-specific language constructs. mps groups are an example.
let's look at the Kajak group. It references a set of languages and solutions. A language reference points to a language defined in an MPS project. A language reference in a group consists of the name (which must be the same as the name of the actual language) and a pointer to the respective mpl file. The simplest way to enter it is to start with the path to the mpl file and then use the load required information from file intention (AltEnter) to adjust the name of the reference.
mps group Kajak
solution jetbrains.mps.samples.JavaKaja
load from ./solutions/JavaKajak/JavaKajak.msd
language jetbrains.mps.samples.KajaAndOr
load from ./languages/KajaAndOr/KajaAndOr.mpl
language jetbrains.mps.samples.Kaja
load from ./languages/Kajak/Kajak.mpl
language jetbrains.mps.samples.KajaSceneConstruction
load from ./languages/KajaSceneConstruction/KajaSceneConstruction.mplNote that a group has to contain the transitive closure of all languages. For example, if you have references a language A which references another language B, then B must also be included in the group. This makes sense, because otherwise the resulting RCP application would not run because dependencies could not be resolved. If a language is missing, then an error will be reported in the build script (red squiggly line). After adding the required languages you may have to rerun the load required information from file intention (AltEnter) on the language with the error to make it "notice" that something has changed.
In addition to languages, you can also reference solutions with the solution construct and devkits with the devkit construct.
tip
The Inspector tool window contains further details on the dependencies of the selected language, solution or devkit.
The layout constructs the directory and file structure of the RCP distribution. It copies in files from various sources, and in particular from the project structure discussed in the previous section. It also compiles, builds and packages these files if necessary. It can also refer to artifacts defined in other build scripts, on which this script depends. We start out with the following code:
default layout:
import mpsStandalone::languages
import mpsStandalone::licenseThose two imported are folder elements in the referenced mpsStandalone build script. By importing them, the contents of these folders are imported (i.e. copied into) our RCP distribution.
The wizard has added code to create a bin folder and copy common configuration and properties files into it. You may further customise it or leave it untouched.
folder bin
import files from mpsStandalone::bin
include log.xml
include log4j.dtd
file $mps_home/bin/idea.properties
replace regex "\.MPS(\w+)" /g -> \.${build.number}Next up, we create a new folder lib into which we import all the stuff from from mpsStandalone::lib except the MPS sources and the existing branding.jar (which contains the default MPS splash screen etc.). We then create a new jar file branding.jar (it has to have this name to work; the IDEA platform expects it this way) into which we put all the files defined in the branding section of the project structure defined above.
folder lib
import files from buildStandalone::lib
exclude MPS-src.zip
exclude branding.jar
jar branding.jar
files of idea branding KajakWe then create a folder plugins. The mps-core plugin is required in any RCP app, so it needs to be imported in any case. We then import various version control plugins (CVS, SVN anf git) defined in the mpsStandalone build script. For obvious reasons, a standalone Kaja IDE needs version control support, so it makes sense to import those plugins. Finally, we include the debugger plugin, since Kaja also integrates with the MPS debugger.
folder plugins
import mpsStandalone::plugins/svn4idea
import mpsStandalone::plugins/cvsIntegration
import mpsStandalone::plugins/git4idea
import mpsStandalone::plugins/mps-core
import mpsDebuggerPlugin::plugins/mps-debugger-apiWe then integrate the Kajak plugin defined in the project structure earlier. Using the plugin construct we can import the complete definition of the plugin defined earlier.
plugin Kajak
<empty>Inside the plugin we define further subdirectories that contain various library jars. These jar files are automatically made visible to the plugin classpath. Using the file construct we copy various files into the plugin directory, using the macros defined earlier.
plugin Kajak
folder libs
file ./solutions/JavaKajak/images/kaja_images.jar
...Note how this plugin does not just contain the jars we copied in, but also all the language artifacts necessary. That has been accomplished by defining these mps groups and referencing them from the plugin. The fact that we can use these mps groups is thanks to the mps build language plugin. It provides direct support for MPS artifacts, and all the necessary files and metadata are handled automatically.
We may also import mps-make:
# optional plugins
import mpsMakePlugin::mps-makeFinally we create a property file called build.number that contains a bunch of meta data used in the running RCP application. It is required by the underlying IntelliJ platform.
properties file build.number
build.number = ${build.number}
date = ${date}
version = 1.0At this point, the generated directory structure consitutes the platform indepenent core of a stripped down MPS distribution that contains all the artifacts you've configured into it, including your custom branding. However, you cannot run it, since the platform specific aspects are still missing.
It is the time to look at the second generated build script - KajakDistribution.
build KajakDistribution generates buildDistribution.xml
base directory: ../../
use plugins:
<< ... >>
macros:
folder mps_home = ./../../work/MPS 3.2
var version = 1.0
dependencies:
Kajak
project structure:
<< ... >>
default layout:
tar ${build.number}-linux.tar.gz (compression gzip)
folder Kajak ${version}
import files from Kajak::/
<any>
folder bin
file $mps_home/bin/linux/fsnotifier (755)
file $mps_home/bin/linux/fsnotifier64 (755)
file $mps_home/bin/mps.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
file $mps_home/bin/mps64.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
files from $mps_home/bin/linux
exclude **/fsnotifier
exclude **/fsnotifier64
file $mps_home/mps.sh (755)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
zip ${build.number}.zip
...The build script depends on Kajak so that it could properly package the platform-neutral artefacts into platform-specific distributions. The mps_home macro points to a generic MPS installation, since the distributions targeting a single platform (macOS, Linux or Windows) might miss artefacts needed by the other platforms. The generic distribution is also available for download from the MPS website.
There is no windows-specific distribution generated by the build scripts. To run the generated standalone IDE on windows, you need to use the generated generic zip file, copy the contents of the win directory into the bin directory and use the mps.bat file to start the IDE.
All standalone IDEs built on top of MPS can offer their users a Tips & Tricks dialog with useful hints that help the users familiarize with the tool.
The content of the Tips & Tricks for MPS can be customized. This can be done with the new build script tips & tricks concept:
Tips can be either reused from the MPS general distribution, imported from a directory or from a solution:
The first option just adds all the MPS tips to the distribution. This is the default option for build scripts generated with the build script wizard.
The second one requires a manually created folder with the correct structure of tips. The desired structure can be obtained from the mps-tips.jar file itself. You need a folder that contains all the html files plus the css and image folders.
The last option allows tips to be defined using the jetbrains.mps.build.tips and jetbrains.mps.core.xml languages in MPS itself.
Finally, the tips must be packaged into the build script layout to the lib folder. In the build script generated with the wizard MPS tips & tricks are packaged to lib folder by default:
To import tips & tricks from a solution, create a solution with a model and add languages jetbrains.mps.build.tips and jetbrains.mps.core.xml to the model used languages. Then you can create an instance of the MPSTipsAndTricks concept, where multiple tips can be created. Each tip is an HTML formatted text. One image can be added to each tip:
Importing from a solution to a build script tips & tricks is done by pointing to the solution and the generated xml from the MPSTipsAndTricks concept:
build Kajak generates myBuild.xml
base directory: ../../
use plugins:
java
mps
macros:
var date = date 20150422
var build.number = Kajak-139.SNAPSHOT
folder mps_home = ./../../../../Applications/MPS 3.2.app/Contents
dependencies:
mpsStandalone (artifacts location $mps_home)
mpsMakePlugin (artifacts location $mps_home/plugins)
project structure:
idea branding Kajak
codename Kajak
company <no company>
version 1.0, eap false
full name Kajak
build number ${build.number}, date ${date}
icons
16x16 ./icons/MPS16.png
32x32 ./icons/MPS32.png
32x32 opaque ./icons/MPS32.png
128x128 <no icon128>
splash screen ./icons/splash.png textcolor 002387
about screen ./icons/about.png
dialog image ./icons/dialogImage.png
welcome screen
caption ./icons/caption.png
slogan ./icons/slogan.png
logo ./icons/logo.png
<no updateWebsite>
plugins <no plugins>
whats new <no whatsnew>
<no stats>
<no help>
feedback url <no feedbackUrl>
idea plugin Kajak
name Kajak
short (folder) name Kajak
description <no description>
version 1.0
<< no vendor >>
content:
Kajak
dependencies:
jetbrains.mps.core
<< ... >>
mps group Kajak
solution jetbrains.mps.samples.JavaKaja
load from ./solutions/JavaKajak/JavaKajak.msd
language jetbrains.mps.samples.KajaAndOr
load from ./languages/KajaAndOr/KajaAndOr.mpl
language jetbrains.mps.samples.Kaja
load from ./languages/Kajak/Kajak.mpl
language jetbrains.mps.samples.KajaSceneConstruction
load from ./languages/KajaSceneConstruction/KajaSceneConstruction.mpl
default layout:
import mpsStandalone::languages
import mpsStandalone::license
folder bin
import files from mpsStandalone::bin
include log.xml
include log4j.dtd
file $mps_home/bin/idea.properties
replace regex "\.MPS(\w+)" /g -> \.${build.number}
folder lib
import files from mpsStandalone::lib
exclude MPS-src.zip
exclude branding.jar
jar branding.jar
files of idea branding Kajak
folder plugins
import mpsStandalone::plugins/svn4idea
import mpsStandalone::plugins/cvsIntegration
import mpsStandalone::plugins/git4idea
import mpsStandalone::plugins/mps-core
plugin Kajak
folder libs
file ./solutions/JavaKajak/images/kaja_images.jar
# optional plugins
import mpsMakePlugin::mps-make
properties file build.number
build.number = ${build.number}
date = ${date}
version = 1.0
<<additional aspects>>build KajakDistribution generates buildDistribution.xml
base directory: ../../
use plugins:
<< ... >>
macros:
folder mps_home = ./../../work/MPS 3.2
var version = 1.0
dependencies:
Kajak
project structure:
<< ... >>
default layout:
tar ${build.number}-linux.tar.gz (compression gzip)
folder Kajak ${version}
import files from Kajak::/
<any>
folder bin
file $mps_home/bin/linux/fsnotifier (755)
file $mps_home/bin/linux/fsnotifier64 (755)
file $mps_home/bin/mps.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
file $mps_home/bin/mps64.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
files from $mps_home/bin/linux
exclude **/fsnotifier
exclude **/fsnotifier64
file $mps_home/mps.sh (755)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
zip ${build.number}.zip
folder Kajak ${version}
import files from Kajak::/
<any>
folder bin
file $mps_home/bin/mps.vmoptions (644)
file $mps_home/bin/mps64.vmoptions (644)
file $mps_home/bin/mps.exe.vmoptions (644)
file $mps_home/bin/mps64.exe.vmoptions (644)
folder win
files from $mps_home/bin/win
exclude **/*.exe
filemode folders: <default (755)>, files: 755
files from $mps_home/bin/win
include **/*.exe
folder linux
files from $mps_home/bin/linux
exclude **/fsnotifier
exclude **/fsnotifier64
file $mps_home/bin/linux/fsnotifier (755)
file $mps_home/bin/linux/fsnotifier64 (755)
folder nix
filemode folders: <default (755)>, files: 755
files from $mps_home/bin/nix
folder mac
file $mps_home/bin/mac/libbreakgen.jnilib (644)
file $mps_home/bin/mac/libbreakgen64.jnilib (644)
file $mps_home/bin/mac/restarter (755)
file $mps_home/bin/mac/fsnotifier (755)
folder Contents
folder Resources
file $mps_home/bin/mac/Contents/Resources/mps.icns (644)
folder MacOS
file $mps_home/bin/mac/Contents/MacOS/mps (755)
file $mps_home/bin/mac/Contents/Info.plist (644)
file $mps_home/mps.sh (755)
file $mps_home/mps.bat (755)
zip ${build.number}-macos.zip
folder Kajak ${version}.app
folder Contents
import files from Kajak::/
<any>
folder Resources
file $mps_home/bin/mac/Contents/Resources/mps.icns (644)
folder MacOS
file $mps_home/bin/mac/Contents/MacOS/mps (755)
file $mps_home/bin/mac/Contents/Info.plist (644)
folder bin
file $mps_home/bin/mac/libbreakgen.jnilib (644)
file $mps_home/bin/mac/libbreakgen64.jnilib (644)
file $mps_home/bin/mac/restarter (755)
file $mps_home/bin/mac/fsnotifier (755)
file $mps_home/bin/mps.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
file $mps_home/bin/mps64.vmoptions (644)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
file $mps_home/mps.sh (755)
fix eol: convert to a single LF, remove eof (Ctrl-Z): true
<<additional aspects>>Assuming your build scripts are free of errors, you can generate them (Rebuild Model or Ctrl-F9). This creates two ant files that have the names set as defined at the top of each of the build scripts:
build Kajak generates myBuild.xmlThis myBuild.xml (in this case) resides directly in your project directory. You can either run the file from the command line (using ant -buildfile myBuild.xml) or directly from within MPS (via the context menu on the build script in the project explorer).
tip
Note that the build script compiles and packages all your languages, but it does not regenerate them! So you have to make sure by other means that your language definitions are fully generated and up to date.
Run both build scripts. The figure below shows the project structure after running the build scripts. In particular, inside the build/artifacts directory, the structure defined in the default layout section of the build script has been created.
We suggest that you browse through the directory and file structure to connect what you see to the definitions in the build script.
In order to run, MPS needs a JDK to be configured to run it. The same holds true for the standalone IDEs. Ideally, they should be run with the JetBrains JDK, that is part of the MPS distribution and can be found in the $MPS_HOME/jbr folder. You can copy the MPS' jbr to your standalone IDE with your build script or manually, if you want to distribute the JetBrains JDK together with your IDE.
When started, the launcher of your standalone IDE will test the following places in this order for the presence of a JDK. It will then use the first JDK found to run the IDE.
On Windows:
MPS_JDK environment variable
mps64.exe.jdk system property
..\jbr folder assuming a JetBrains JDK is bundled with the IDE
JDK_HOME environment variable
JAVA_HOME environment variable
On Linux:
MPS_JDK environment variable
.../mps.jdk, .../jbr, .../jbr-x86 folders assuming a JetBrains JDK is bundled with the IDE in one of these folders
JDK_HOME environment variable
JAVA_HOME environment variable
"java" in $PATH location of pre-defined Java distribution setup for the system
On MacOS:
"java" in $PATH location of pre-defined Java distribution setup for the system
To warn users that opening a project in an IntelliJ-based IDE can potentially run harmful code that may be part of the project being opened, a Trust project dialog was added to the platform.
tip
For more information, refer to a page dedicated to the Trust dialog.
The Trust project dialog became part of MPS 2021.3. It was decided to switch it off for MPS, however, as the dialog needed some additional customization to be applicable to MPS projects. The dialog in 2021.3 contains a Preview button that is not relevant to MPS applications as MPS is not able to open projects in a safe mode. While disabled for MPS itself, the Build script wizzard in MPS 2021.3 enabled the Trust project dialog for customers' standalone IDEs.
Since MPS 2022.2 an adopted two-button Trust project dialog has been enabled both for MPS and for MPS-based standalone IDEs. The Build script wizzard since 2022.2 enables this new dialog for standalone IDEs. Standalone applications created by the build script wizard of MPS 2021.3, 2022.2 or later and built using 2022.2 or later will get the new "two-button" Trust project dialog.
To disable the Trust project dialog in a standalone MPS-based IDE use the -Didea.trust.disabled=true vm option in the startup script or the "vmoptions" configuration file.
Since MPS supports the traditional UI as well as the new UI, standalone IDEs, the build script offers ways to enable or disable the new UI for users of the generated standalone IDEs.
There are currently two vm options that have effect on which UI variant is offered to the users of your IDE and which you can specify/modify in your build scripts:
-Dide.experimental.ui switches the new UI on or off for new users of your IDE. This option is set to false for standalone IDEs build scripts in 2023.3 and 2024.1.
-Dexperimental.ui.used.once if present will disable an automatic in-tool promotion that advertises the new UI to the users. This option is set on by default for standalone IDEs build scripts in 2023.3 and 2024.1.
Newly generated IDEs will get the -Dexperimental.ui.used.once property set by the generator. Existing startup scripts have to be either modified manually or regenerated with the new version of MPS. If you want to enable the banner for the users of your standalone IDE, remove the property from your build scripts manually.
In MPS 2024.2 the new UI will most likely become the default option and the newly created build scripts will reflect that.
Thanks for your feedback!