Topic starter
02/08/2026 12:27 pm
TL;DR: Cross-platform runtime gaps, build-system constraints, and Windows-specific file semantics can block local SAST delivery, according to Semgrep. The broader lesson is that developer-side security feedback only scales when tooling, packaging, and execution environments are treated as part of the governance problem, not just the scanner itself.
Editorial analysis by NHI Mgmt Group, based on content published by Semgrep: “LSP.js: Using Wasm and JavaScript to support OCaml on Windows”.
Key questions
Q: How should teams handle local security tools when developers use Windows endpoints?
A: Treat Windows support as part of the control boundary, not a packaging afterthought.
Q: Why do local SAST tools fail when they depend on Unix-specific runtime behaviour?
A: Because process management, filesystem semantics, and optimisation assumptions often differ by operating system.
Q: What do security teams get wrong about cross-platform developer tooling?
A: They often measure success by whether a binary exists, not whether the control behaves consistently across endpoints.
Practitioner guidance
- Map endpoint coverage before mandating local SAST Check whether developers can run the scanner locally on the operating systems they actually use, including Windows, without unsupported workarounds like WSL.
- Separate native and cross-platform dependency paths Use build-time selection or equivalent isolation so Windows-safe runtime code does not inherit incompatible native bindings or Unix-only libraries.
- Test file and parser behaviour under the target OS Validate newline handling, null-device behaviour, profile-path storage, and parser recursion limits on the same operating system that developers use.
Bottom line: Local SAST portability is limited by runtime and operating system assumptions, not just by scanner logic.
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02/08/2026 1:26 pm
Cross-platform security tooling is only as real as its weakest runtime assumption. The Windows work shows that local SAST is not simply a scanner feature, it is a delivery model that depends on operating system behaviour, build tooling, and file semantics. If the tool cannot execute predictably on the endpoint where code is written, the control boundary shifts back to CI, and early feedback is lost.
A question worth separating out:
Q: What happens when security feedback shifts from the IDE to CI?
A: It arrives later, reaches fewer developers, and becomes harder to act on before code is merged. That weakens the preventive value of static analysis, because findings become gatekeeping signals instead of immediate coding guidance. Teams should keep CI scanning, but not use it as a substitute for local enforcement.
👉 Read our full editorial: Windows support for Semgrep exposed the limits of local SAST portability