MoiraeSoftware/Myriad

Myriad is a .NET code generation tool designed for F\# projects that integrates directly into the build process via MSBuild and a command-line interface. It utilizes a plugin-based architecture to automatically generate helper code, such as lenses, field accessors, and discriminated union utilities, based on source attributes. The system supports both standard file output and inline generation, while providing diagnostic reporting and configuration through TOML files.

A new sample project named 'Example' has been added to the samples directory, including a solution file, a configuration file (myriad.toml), and source files. The sample demonstrates the usage of the Myriad code generator by defining record types (Test1, Test2) with a specific attribute and including the corresponding generated code (Generated.fs) that provides accessor and mapping functions for these fields.

samples · high confidence

The \experiments/\ directory now includes structured documentation for the Myriad research and development process, including a comprehensive backlog (\BACKLOG.md\) tracking hypotheses and engineering gaps, a findings digest (\FINDINGS.md\) synthesizing results from thirty experimental quartets (Q001–Q030), and a detailed README (\README.md\) outlining the experimental methodology. This entry also adds the initial hypothesis, design, and results documentation for the first quartet (Q001), which investigates in-process FCS hosting and typed code generation, providing the foundational context for subsequent experiments.

experiments · high confidence

The Myriad command-line interface is now implemented in src/Myriad/Program.fs, enabling users to configure code generation via a myriad.toml file and load external generator plugins. The CLI supports batch processing through a manifest file, allows filtering specific generators, and passes configuration keys and additional parameters to the generation pipeline. This change introduces dependencies on Argu for argument parsing, Tomlyn for TOML handling, and McMaster.NETCore.Plugins for dynamic plugin loading.

src/Myriad · high confidence

The Myriad.Plugins library now provides a structured, attribute-driven code generation system. Users can apply attributes like \[Lenses\], \[Fields\], and \[DuCases\] to types to automatically generate helper modules. The Lenses generator creates getter/setter pairs for record fields and single-case discriminated unions, with support for a custom wrapper type and a 'piped setter' configuration option. The Fields generator produces map and create functions for records, while the DUCases generator adds toString, fromString, toTag, and isCase helpers for discriminated unions. All generators support configuration via attributes or a global config key, allowing control over namespaces and qualification.

src/Myriad.Plugins · high confidence

Myriad.Core now provides foundational support for parsing and generating F\# code via Fantomas.FCS, including helpers for building AST nodes (AstExtensions.fs) and extracting literal bindings from attributes (Ast.fs). The library adds a diagnostics API (Diagnostics.fs, Types.fs) allowing generators to report warnings and errors as MSBuild-compatible messages without aborting the build, and integrates .editorconfig support (EditorConfig.fs) to read formatting preferences. Additionally, it introduces an inline generation mode (Generation.fs) that appends output to input files and defines the IMyriadGenerator interface with context and project path support.

src/Myriad.Core · high confidence

Added a new Myriad.Sdk package that provides MSBuild integration between Myriad and .NET SDK projects. The package targets netstandard2.1, disables implicit framework references and build output, and includes MSBuild props and targets files for multi-targeting support. It references the main Myriad package via PackageDownload to ensure version alignment and avoid NuGet conflicts.

src/Myriad.Sdk · high confidence

The solution file has been restructured to split the codebase into distinct projects: Myriad, Myriad.Core, and Myriad.Plugins. This change also updates the solution to reference existing test projects (Myriad.Plugins.Example1 and Myriad.IntegrationPluginTests) that were previously located outside the src directory, effectively moving them into the solution's build graph.

src · high confidence

Myriad has reached version 1.0.0, marking its public API as stable. This release introduces several key behavioral improvements: generated code is no longer written if unchanged, preventing unnecessary file timestamp updates and editor noise; the tool now runs once per project via a manifest file instead of spawning a separate process for each input file, improving startup performance; and the design-time build gate has been removed, allowing generated members to appear in IDEs without a full build. Additionally, the project now multi-targets .NET 8 and .NET 9, and inline generation output no longer appends an extra blank line.

(repo-wide) · high confidence

Added example plugin generators to test diagnostics and inline generation; Added integration test suite for the Myriad code generator.

The project files for the experiment artifacts (located under experiments/Q\*) have been updated to target .NET 8.0 or .NET 9.0 and reference FSharp.Compiler.Service version 43.9.101. This change aligns the experimental harnesses with the latest compiler service version and modern .NET runtimes, ensuring consistent dependency shapes across the various type-provider and code-generation spikes.

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 60 → 54 (-5.5)
• Rubric changed (rubric-2026.08.19 → rubric-2026.09.15) — scores are not directly comparable.

• Code Health 81 → 43 (-37.8)
• Architecture 100 → 100 (+0.0)
• Maturity 56 → 57 (+0.6)
• Readiness 67 → 62 (-4.9)
• Security 52 → 70 (+17.9)

• Analyze.analyze (cognitive 19) (experiments/Q020-shared-analysis-diagnostic-channels/artifacts/SharedAnalysis/SharedAnalysis.fs)
• Ast.extractLiteralBindings (cognitive 20) (src/Myriad.Core/Ast.fs)
• Code Duplication not included (time budget)
• Dependency hygiene not measured — no packages were read
• DynamicReflection.op_Dynamic (cognitive 35) (src/Myriad.Core/Ast.fs)
• DynamicReflection.op_Dynamic (cyclomatic 19) (src/Myriad.Core/Ast.fs)
• EditorConfig.parseOptionsFromEditorConfig (cognitive 20) (src/Myriad.Core/EditorConfig.fs)
• EditorConfig.parseOptionsFromEditorConfig (cyclomatic 16) (src/Myriad.Core/EditorConfig.fs)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• High: security finding (details withheld)
• …and 25 more

• Duplicated block (10 lines × 2) (experiments/Q001-fcs-typed-codegen/artifacts/round2-incrementality-staleness/Program.fs)
• Duplicated block (10 lines × 2) (experiments/Q007-fsi-static-parameters/artifacts/Verify/Program.fs)
• Duplicated block (10 lines × 2) (experiments/Q012-compiler-behavior-probe/artifacts/SchemaTP.Runtime/Provenance.fs)
• Duplicated block (10 lines × 2) (experiments/Q019-erased-self-parsing-provider/artifacts/MyriadPreview.DesignTime/MyriadPreviewProvider.fs)
• Duplicated block (10 lines × 2) (experiments/Q023-scale-cost-reentrant-callback/artifacts/q023-spike/Program.fs)
• Duplicated block (10 lines × 6) (experiments/Q007-fsi-static-parameters/artifacts/Harness/Program.fs)
• Duplicated block (107 lines × 2) (experiments/Q023-scale-cost-reentrant-callback/artifacts/q023-spike/Program.fs)
• Duplicated block (10–15 lines × 2) (experiments/Q020-shared-analysis-diagnostic-channels/artifacts/Harness/Program.fs)
• Duplicated block (11 lines × 2) (experiments/Q012-compiler-behavior-probe/artifacts/ClientTP.Runtime/Consumes.fs)
• Duplicated block (11 lines × 2) (experiments/Q014-fsi-staged-compilation/artifacts/spike/Program.fs)
• Duplicated block (11 lines × 2) (experiments/Q017-satellite-function-typed-forwarding/artifacts/Harness/Program.fs)
• Duplicated block (11 lines × 3) (experiments/Q016-satellite-dll-type-provider/artifacts/SatelliteTP.DesignTime/SatelliteProvider.fs)
• Duplicated block (11 lines × 5) (experiments/Q007-fsi-static-parameters/artifacts/Harness/Program.fs)
• Duplicated block (11 lines × 6) (experiments/Q007-fsi-static-parameters/artifacts/Harness/Program.fs)
• Duplicated block (11 lines × 7) (experiments/Q012-compiler-behavior-probe/artifacts/ClientTP.DesignTime/ClientProvider.fs)
• Duplicated block (11–14 lines × 2) (experiments/Q014-fsi-staged-compilation/artifacts/spike/Program.fs)
• Duplicated block (12 lines × 2) (experiments/Q010-prefix-stratified-generation/artifacts/round1-reentrancy/Program.fs)
• Duplicated block (12 lines × 2) (experiments/Q012-compiler-behavior-probe/artifacts/ProbeSimple.DesignTime/ProbeProvider.fs)
• Duplicated block (12 lines × 4) (experiments/Q016-satellite-dll-type-provider/artifacts/Harness/Program.fs)
• Duplicated block (12 lines × 6) (experiments/Q007-fsi-static-parameters/artifacts/Harness/Program.fs)
• …and 132 more

• 10 commits — 8 feature/other, 2 fixes

• (repo) — 4 commits
• (root) — 4 commits
• test/Myriad.IntegrationPluginTests — 2 commits

• fix: Fix parseAdditionalParams to split multiple pipe-delimited MyriadParams entries
• fix: Merge pull request #300 from MoiraeSoftware/copilot/fix-myriadparams-parsing-issue
• change: Address review: real-generator test, trailing blank line, explicit false
• change: Initial plan
• change: Merge pull request #298 from Jah-yee/master
• change: Merge pull request #301 from JohSand/inline-parameter-and-unchanged-output
• change: Multi-target net8.0/net9.0 and release v0.9.0
• change: Release v1.0.0
• change: Remove dead link (7sharp9.dev is unreachable)
• change: Tell generators about inline generation and skip writing unchanged output

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

MoiraeSoftware/Myriad was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.