[2025-10-13] Libs and Engine Team Demo Day

[GregoryTravis]

James:

• Flip includeNothing to skipNothing Flip includeNothing to skipNothing #13993
• Add missing imports Add missing imports #14027
• SQL Server Schema support and fix for Generic JDBC SQL Server Schema support and fix for Generic JDBC #14032
• Isolate use of HideableValue in Enso code Isolate use of HideableValue in Enso code #14039
• Update the format for SQL Server DataLinks Update the format for SQL Server DataLinks #14062
• Small Extrass for Release 2025.2.4 Small Extrass for Release 2025.2.4 #14071
• Fix for issue with SQL Server IIF Fix for issue with SQL Server IIF #14090
• Fix for defect in Data Links Fix for defect in Data Links #14093
• Fix some defects from release testing Fix some defects from release testing #14102
• Initial work on DuckDB Initial work on DuckDB #14114
• Add support for Decimal types in SQL Server Add support for Decimal types in SQL Server #14124

Greg:

• Document strava integration testing Document strava integration testing #14043
• Update .dev-env submodule to main. Update .dev-env submodule to main. #14080
• Microsoft 365 OAuth Microsoft 365 OAuth #14135
• Update dev-env submodule for removing microsoft signout url Update dev-env submodule for removing microsoft signout url #14140

Ad:

• Remove excel connection pool dependency from Excel_Workbook Remove excel connection pool dependency from Excel_Workbook #14000
• support gzip responses from fetch support gzip responses from fetch #14026
• Excel Connection Pool Cleanup - part 2 Excel Connection Pool Cleanup - part 2 #14033
• javafmtAll to fix merge races javafmtAll to fix merge races #14045
• Excel connection pool changes part 3 Excel connection pool changes part 3 #14046
• Create Excel Format Strategy Create Excel Format Strategy #14068
• Change Column.length to Column.row_count Change Column.length to Column.row_count #14085
• Add Text_Column.length and Text_Column.char_length Add Text_Column.length and Text_Column.char_length #14091
• Fix table of Rows Viz Fix table of Rows Viz #14103
• Added check for parent folder existing prior to write Added check for parent folder existing prior to write #14120
• xlbs Add Excel_File_Format.enso and bring readers into the ExcelFormatStrategy #14130

Hubert:

• WIP: Replacing Static Dataflow Analysis with Reactive Caches WIP: Replacing Static Dataflow Analysis with Reactive Caches #13948
• Helping with DuckDB integration Initial work on DuckDB #14114
• Testing macos-15-intel Testing macos-15-intel #14073

Pavel:

• Upload heap dump on OutOfMemoryError Upload heap dump on OutOfMemoryError #13981
• Documenting unexpected cmdline opts handling of NI Documenting unexpected cmdline opts handling of NI #13984
• Check IR cache sizes on the CI Check IR cache sizes on the CI #14001
• Relax max IR cache sizes to 130 MB. Relax max IR cache sizes to 130 MB. #14007
• Update to GraalVM 25 Update to GraalVM 25 #14019
• Bump Google java format version to 1.28.0 Bump Google java format version to 1.28.0 #14038
• Fix blank arguments in signature Fix blank arguments in signature #14078
• Refactor Method IR to Java Refactor Method IR to Java #14086
• Build native image with Bazel Build native image with Bazel #14105
• EnsoFile uses java.nio.files.Path instead of TruffleFile EnsoFile uses java.nio.files.Path instead of TruffleFile #14126

Dmitry:

• Implement functionality to open and close projects in dashboard Implement functionality to open and close projects in dashboard #13994
• Add refactoring/renameProject HTTP endpoint Add refactoring/renameProject HTTP endpoint #14012
• Fix calling useFeatureFlag function without vue effect scope Fix calling useFeatureFlag function without vue effect scope #14063
• Add shebang to enso executable Add shebang to enso executable #14075
• Fix duplicate suggestions sending Fix duplicate suggestions sending #14110
• Fix running enso.bat Fix running enso.bat #14113
• Remove project manager from Electron Remove project manager from Electron #14116

[JaroslavTulach]

Conversion and Equality Oriented

Enso, at it roots, is a conversion oriented language. Enso supports flexible definitions of conversions of values of a type to another. To stress the importance of conversions in usage of the Enso language, there is Any.to target_type method available on any value in the Enso system that allows to morph and view any object as a different type easily when such a conversion is available.

In addition to that Enso is structured equality oriented language. There is Any.== operator that allows any two values to be compared for equality. The comparison is based on structure - e.g. two instances of the same atom with equal fields are the same. Enso provides such a structured equality implementation to every user defined type automatically, yet it also offers more complex equality handling when needed (via Comparable type).

Enso is conversion and (structured) equality oriented language. That fact is stressed by the shape of its root type Any. It exposes just .to, == and != operations.

• Make Enso "conversion and equality oriented" language #14133
• Make Enso less "error oriented" language #14003
• Moving |> operator to Function #14004
• Moving >, >=, <, <= to types where such operators make sense #14017
• Defining to_text & co. as extension methods #14050
• look how slim the Any API snapshot is now:

type Any
    != self that
    == self that 
    to self target_type

Dual JVM Mode

• Progressing OK, but blocking Update to GraalVM 25 #14019 as we are seeing crash on Windows when using I/O "twice"
• Testing in CI Test Standard.Microsoft in (mocked) dual JVM mode #14037
• Benchmarks are being executed and there is 72% speedup: Fibonacci benchmark comparing hosted and dual JVM modes #14099

- CLI is fine, but IDE needs some more love: #14040 - #14022 - #14049

Ydoc-server in enso process

• Launching ydoc-server together with language-server #13178

Misc

• Avoid using JNI when not in Native Image code #14061
• Let withDebug --debugger work for runtime-benchmarks #14106
• Check all types of a (multi) value to get an annotation #14109
• Improvements to Enso4Igv plugin #14111