## flint v0.20.0 — Rust rewrite
flint has been rewritten from scratch in Rust. The bash + Docker stack
is replaced by a fast, cross-platform native binary with no container
dependency.
### Highlights
- **Native binary** — no Docker, no bash wrappers; runs anywhere mise
can install a Rust crate
- **Parallel linting** — all checks run concurrently
- **Diff-aware** — only checks files changed since the merge base by
default (`--full` for everything)
- **`flint update`** — migrates obsolete `mise.toml` tool keys
automatically (e.g. `ubi:` → `github:`, `npm:markdownlint-cli` →
`npm:markdownlint-cli2`)
- **`flint hook install`** — installs a pre-commit hook without any mise
task knowledge
- **New linters**: `gofmt`, `google-java-format`, `ktlint`,
`dotnet-format`, `markdownlint-cli2`, `xmllint` (via `cargo:xmloxide`),
`license-header` (pure-Rust, no binary)
- **Windows support** — ktlint self-executing JAR handled via explicit
`java -jar` invocation
### Migration
See
[AGENTS-V2.md](https://github.com/grafana/flint/blob/main/AGENTS-V2.md)
and [README.md](https://github.com/grafana/flint/blob/main/README.md)
for full setup instructions.
Quick reference for existing consumers:
```toml
[tools]
# While installing from source (pre-crates.io release):
"cargo:https://github.com/grafana/flint" = "branch:main"
[env]
FLINT_CONFIG_DIR = ".github/config"
[tasks.lint]
run = "flint run"
[tasks."lint:fix"]
run = "flint run --fix"
```
Remove: `lint:super-linter`, `lint:links`, `lint:renovate-deps`,
`setup:native-lint-tools`, `setup:pre-commit-hook` tasks. Run `flint
update` to auto-migrate any obsolete tool keys.
> [!NOTE]
> The changelog below includes entries from the legacy v1 bash era — see
[README-V1.md](https://github.com/grafana/flint/blob/main/README-V1.md)
for v1 docs.
---
##
[0.20.0](https://github.com/grafana/flint/compare/flint-v0.19.0...flint-v0.20.0)
(2026-04-13)
### Features
* add flint v2 Rust binary
([#139](https://github.com/grafana/flint/issues/139))
([19f2b25](https://github.com/grafana/flint/commit/19f2b2527b4420956f2f3f6b35cc946159370db5))
* add native linting mode and version mapping infrastructure
([#93](https://github.com/grafana/flint/issues/93))
([24b06da](https://github.com/grafana/flint/commit/24b06da3eeeb97722cf280b5815c75c3ec31f134))
* add Renovate shareable preset for consuming repos
([#17](https://github.com/grafana/flint/issues/17))
([8a06590](https://github.com/grafana/flint/commit/8a06590741fc0db0a801a84337928d5388e22d1a))
* consolidate link checking and add autofix flags
([#7](https://github.com/grafana/flint/issues/7))
([086a5e9](https://github.com/grafana/flint/commit/086a5e9c942a373a276e6a77853066187ed2c268))
* flint update command, explicit JAR flag, v0.20.0
([#146](https://github.com/grafana/flint/issues/146))
([b43bf52](https://github.com/grafana/flint/commit/b43bf523b5ee6944ce67f7082ea4b4aea496e9ea))
* handle line-number anchors and issue comments globally
([#56](https://github.com/grafana/flint/issues/56))
([cf751df](https://github.com/grafana/flint/commit/cf751df1093a06d8dfac60c9918ef129944494e4))
* **links:** add GitHub URL remaps for line-number and fragment anchors
([#28](https://github.com/grafana/flint/issues/28))
([5b59065](https://github.com/grafana/flint/commit/5b590653fbd24963fba8e99e409b9977ec2410fc))
* **links:** auto-remap base-branch GitHub URLs to PR branch
([#18](https://github.com/grafana/flint/issues/18))
([dd6cc61](https://github.com/grafana/flint/commit/dd6cc616792680be71ca364d37150a90644db3d4))
* **renovate:** support SHA-pinned URLs in Renovate preset
([#21](https://github.com/grafana/flint/issues/21))
([4fd1f28](https://github.com/grafana/flint/commit/4fd1f28c2ced164e15c8663e5fc3ac28f9217ca8))
* **super-linter:** default to slim image
([#24](https://github.com/grafana/flint/issues/24))
([c8eeab8](https://github.com/grafana/flint/commit/c8eeab82e5db39f0cf8b57a5ee7ac1fc7106a1b0))
* support NATIVE env var for container-free linting
([#107](https://github.com/grafana/flint/issues/107))
([0a8193d](https://github.com/grafana/flint/commit/0a8193d5b0c264430b7a78c56a0fe0418173ff37))
### Bug Fixes
* activate mise environment in native lint mode
([#123](https://github.com/grafana/flint/issues/123))
([d0fec45](https://github.com/grafana/flint/commit/d0fec4574c1905efb22e7e75bcca7ba7c2db64cf))
* add 'mise run fix' hint to lint failure output
([#90](https://github.com/grafana/flint/issues/90))
([5b4ad5d](https://github.com/grafana/flint/commit/5b4ad5d2a2fc53e0d11de924b183adb4fb4f5a90))
* decouple version mapping generation from pinned super-linter version
([#112](https://github.com/grafana/flint/issues/112))
([5370e77](https://github.com/grafana/flint/commit/5370e77a864084c146502f9c265792d035517376))
* **deps:** update rust crate crossterm to 0.29
([#156](https://github.com/grafana/flint/issues/156))
([c59ae3e](https://github.com/grafana/flint/commit/c59ae3ea3da34782eaa1eeb8faba8552151f558d))
* **deps:** update rust crate similar to v3
([#160](https://github.com/grafana/flint/issues/160))
([684be4e](https://github.com/grafana/flint/commit/684be4e2a1f26da34ab6a2d35dbb0a5369747596))
* **deps:** update rust crate toml to v1
([#161](https://github.com/grafana/flint/issues/161))
([3aae614](https://github.com/grafana/flint/commit/3aae614582b59b0c46bed37b411bdb2753dcee5f))
* **deps:** update rust crate toml_edit to 0.25
([#158](https://github.com/grafana/flint/issues/158))
([42d9efd](https://github.com/grafana/flint/commit/42d9efded7507704e5684bf7c1f06dd4ff667740))
* exclude GitHub compare links from lychee checks
([#10](https://github.com/grafana/flint/issues/10))
([e714608](https://github.com/grafana/flint/commit/e714608d1d7550c5540f9e79cb6f14c9ed86a5ad))
* fail native lint when enabled tools are missing
([#111](https://github.com/grafana/flint/issues/111))
([163bb6b](https://github.com/grafana/flint/commit/163bb6b31e558af4a977c94cf8489311a085fc54))
* improve link checker reliability against GitHub rate limiting
([#95](https://github.com/grafana/flint/issues/95))
([7a5282d](https://github.com/grafana/flint/commit/7a5282de91df8a67dad3fd6ac8fc2b082434d8df))
* include staged files in native lint file list
([#135](https://github.com/grafana/flint/issues/135))
([34412d6](https://github.com/grafana/flint/commit/34412d69d9af0b189dbe8de5a5549a964d8cfe80))
* **links:** add regex anchors to remap patterns
([#19](https://github.com/grafana/flint/issues/19))
([2e17348](https://github.com/grafana/flint/commit/2e1734890548f9694c768a87d650f3f80a253f89))
* native lint in worktrees, trust toml, use ec binary, drop isort
([#134](https://github.com/grafana/flint/issues/134))
([8594bba](https://github.com/grafana/flint/commit/8594bbabd4de528da476d0f6ead9dfb49913dd8a))
* **release-please:** fix footer not appearing on release PRs
([#40](https://github.com/grafana/flint/issues/40))
([d7a55e4](https://github.com/grafana/flint/commit/d7a55e4a2ea3754afb84c5c31eeb742b374c21e0))
* remap same-repo GitHub URLs to local file paths
([#100](https://github.com/grafana/flint/issues/100))
([b4feadd](https://github.com/grafana/flint/commit/b4feaddd9af690574eaefc112f465b556bf9c345))
* **renovate-deps:** forward GITHUB_TOKEN as GITHUB_COM_TOKEN
([#132](https://github.com/grafana/flint/issues/132))
([4d6510b](https://github.com/grafana/flint/commit/4d6510b78361f2fe0bfd1d0cfe27ce8e26256054))
* replace broken release-please PR comment with docs
([#12](https://github.com/grafana/flint/issues/12))
([817b37d](https://github.com/grafana/flint/commit/817b37df94fcd6be43fa61594d94e9988d3c6c8d))
* run shellcheck on .bats files in native mode
([#137](https://github.com/grafana/flint/issues/137))
([a4fd3f8](https://github.com/grafana/flint/commit/a4fd3f8ea41d9b155b13805336549e2dcad49bd4))
* strip Scroll to Text Fragment anchors in link checks
([#86](https://github.com/grafana/flint/issues/86))
([b630cdf](https://github.com/grafana/flint/commit/b630cdfdd53c67f2e1f744ff89787fe18342e389))
* tighten markdownlint config for native mode
([#106](https://github.com/grafana/flint/issues/106))
([6ef25b2](https://github.com/grafana/flint/commit/6ef25b2fd3f3887e4be9918317526ddc77b65575))
* use remap instead of exclude for issue comment anchors
([#58](https://github.com/grafana/flint/issues/58))
([656f355](https://github.com/grafana/flint/commit/656f355db5280a86c885da957f34193d1efc800e))
---
> [!IMPORTANT]
> Close and reopen this PR to trigger CI checks.
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
