- Patch notes 2026-10-09 - 9 October 2026
Swamp 0.6.10 BreakingSingle item enum payloads in enum definitions are no longer allowed to have () around it, to not be confused with tuples.Enum variant patterns for if comparison must be on the left hand side of the == or !=. AddedColor literals in hex, #RRGGBB, and #RRGGBBAA. Suggested by catnipped.Emacs integration for Swamp files, thanks to Erik Svedäng.Segmented blocks ---. It functions as a normal block, but you don't have to wrap with {} and indent code.LSP: semantic tokens. Improves syntax highlighting.LSP: rename symbol.LSP: search for symbols in the workspace.LSP: color provider.LSP: format document.LSP: foldable regions.LSP: inline type hints.LSP: inline parameter name hints for positional arguments.Scoped variable definitions ::= syntax. Lets you use the variable using definitions.JIT execution through Rift, compiling code to native CPU instructions on supported platforms.…
- Patch notes 2026-09-14 - 14 September 2026
Swamp 0.5.53 AddedFunction call guards.Optional-reference subscripting with expr? and expr?. Mainly used in when-expressions.Integer literal suffixes for u8, u16, and u32. FixedCompound operators now calls the associated functions if they are present. Lily Runtime 0.6.22 Addedpixels. API is more resource centric, can load indexed pngs, and has better support for tilemaps.pixels. A simple, but still cool, CRT-style phosphor effect.--show-performance logs basic performance stats. Useful for standalone builds.dev. Dev UI shows a list of the slowest functions called in render().dev. --vsync . Default is true. Just for dev usage.
- Patch notes 2026-09-07 - 7 September 2026
Swamp 0.5.50 AddedSprout now shows context on errors.Parameter --show-constant-init to display constant init functions.Parameter --show-target-code to display backend target code (e.g. Marsh VM assembly).Command bundle that puts all assets files into a single cart archive (.cart).Now swamp.yini can have an optional usages field that can be used to override other fields in the yini. FixedBenchmark results are displayed in fixed columns.Map literals returns is now accepted by the analyzer.Freezes scratch allocated memory area after init once (constants).Liveness now handles "pointless" register mutation properly, those mutations caused clobbering of unrelated registers.Constants with String type is now accepted by the analyzer.Optional to Bool lowering fixes. ImprovedLowering MIR now uses operand directly instead of indirect registers. Lily Runtime 0.6.19 AddedSupport for Raspberry Pi 4 (…
- Patch notes 2026-08-18 - 18 August 2026
Swamp 0.5.43 AddedAdded loop keyword for unconditional loops. Each loop must contain a break.match patterns now support ranges, constants, and variable binding.All project commands accept --workspace and --member to select a workspace and one of its members.--workspace is inferred from the nearest parent swamp.yini.swamp run can run a standalone file without a project.--timings reports timings for compilation stages.--show-performance,--show-hints and --show-lints.--diagnostics-all displays diagnostics for all packages that are compiled.LSP. Diagnostic scope can be configured as Project, ProjectAndLocalPackages, or All. FixedNamed struct patterns now set fields in definition order instead of alphabetical order, preventing memory corruption. Thanks to @catnipped for reporting it. Lily Runtime 0.6.14 Addedsteam. Basic Steam Input support.dev. Deterministic replay recording and playback, i…
- Patch notes 2026-07-28 - 28 July 2026
Swamp 0.5.32 AddedLSP. Now show Hint level diagnostics, e.g. superfluous commas before newline and similar styling. FixedAggregate to unsafe pointer coercions.Creates Slice for headerless collections, i.e. Block.LSP. Problem entries are removed when a file no longer has diagnostics. Lily Runtime 0.5.2 Addedwgpu. Now exposes distinct index, vertex, storage, and uniform buffer handles. Changedwgpu. Resource allocation functions renamed from create_* to alloc_*. FixedRender. Polls device after presenting, to handle running out of command buffers on macOS.Render. Device-recreation messages are now handled in the correct frame.
- Hotfix 2026-07-23 - 23 July 2026
Swamp 0.5.26 - Allow --stdio to be specified for LSP clients.
- Patch notes 2026-07-23 - 23 July 2026
Swamp 0.5.25 Added--show-ir displays HIR, MIR, and FIR output.swamp help displays help for a specific command. FixedRelative Project path are now resolved to absolute path across commands. Experimentalcodegen armv4t: fixed clobbering of registers when destination register is same as one of the source registers. Lily Runtime 0.4.22 AddedMarsh VM: cmp.zero and cmp.nonzero opcodes. ChangedConsole logging is quieter by default, while details remain in log files. OptimizationMarsh VM: Hopefully optimized runner for certain opcodes, e.g. for arithmetic, bitwise operations, shifts, and rotations. Lily Hub 0.2.3 AddedIn-app console with tabs instead of spawning external terminals. Removed“Open in Terminal” process checkbox. ImprovedVSCodium extension installation now tries to find the editor from PATH and standard install locations.
- Patch notes 2026-07-20 - 20 July 2026
Swamp 0.5.23 Addedswamp build can override the project target with --target, --arch, --platform, and --artifact.Guard (|) statements no longer require a wildcard arm.Guards can now optionally group arms with a scope: | { condition -> expression, condition -> expression }. Lily Runtime 0.4.20 Addedconfig API for retrieving values overridden by config.yini.simulation.tick_step setting in lily.yini - defaults to 16 ms.Render and simulation debug.verify settings for verification levels. ChangedDev runtime no longer forces GPU-assisted validation on Windows. Fixedwgpu device-loss now recreates the device and re-initializes the render anchor.Dev: Simulation verification now only runs state checks when full verification level is set.
- Patch notes 2026-07-12 - 12 July 2026
Lily 2026-07-12 Swamp 0.5.18 AddedFormatted string interpolation with support for width, precision, alignment, zero padding, binary, and lower/upper hexadecimal formatting.Support for Slice .Specific error for missing mutable borrow. Changedswamp test no longer scrambles memory by default. Use --scramble-memory to enable it.Removed the deprecated use_super_instructions codegen option. Super instructions are now emitted whenever possible. FixedSource locations for collection lookups point to the usage site instead of the definition. Call stacks and other debug output are now more accurate.LSP: Debug CodeLens now refreshes more reliably.LSP: Projects using correct absolute path for build artifacts. ImprovedError messages involving type names show fully qualified module names instead of internal type id. ExperimentalContinued work on Slice coercions to/from Vec . Lily Runtime 0.4.13 Addeds…
- Patch notes 2026-07-04 - 4 July 2026
Removed older versions of swamp and lily-runtimeSwamp 0.5.16FixedWhile-loop lowering are re-evaluating non-trivial compare expressions each iteration, avoiding potential infinite loop.Lily Runtime 0.4.7ChangedAdjusted watermark overlay scaling and timing.Lily Hub 0.1.24AddedDiscord server link button in the project header.ChangedStartup now shows progress feedback earlier while shell setup completes.Create Project screen now has a two pane layout when possible.Lily CLI 0.1.11ChangedRun command now selects a compatible lily-runtime, if an exact version can not be found.
- Patch notes 2026-07-02 - 2 July 2026
Lily Runtime 0.4.6 AddedFentags support. Example: \some_command x_offset=-32 health=42.0] interleaved text \Layout tags. Example: \color rgba(0.8, 0.4, 0.2, 1.0)]Evaluation overlay for Swim files produced by demo/evaluation builds. ChangedProfiling Report now shows more stats and has ANSI color coding.Render now only requests a redraw on about_to_wait instead of directly after a render. FixedFixedUpdateScheduler now only updates every 16 ms tick. Previously, it updated at least once per render.--profiling command line argument now works again. It shows profiling with ANSI colors to stderr. Only works in the dev runtime. Marsh VM AddedNew super instructions: BoundsCheck, BoundsCheck.lt, LoadScaled, StoreScaled, b.cmp, cpyN, zeroN, etc. These improve runtime performance slightly. ExperimentalIntrinsic vec_quick_sort(). Swamp 0.5.14 AddedSubcommand clean deletes the Swim file target (e.g.…
- Patch notes 2026-06-17 - 17 June 2026
Brings back profiling via the lily-runtime --profiling argument, adds the new Swamp keyword erase, which makes it easy to remove elements from collections, and includes a few bug fixes related to resource IDs and Block . Read the details on the changelog!
