# kern 1.1.0

> Editions, package management, Go-parity stdlib breadth. The first feature release on the 1.0 line.

Source: https://kern-lang.eu/releases/1.1.0

Editions, package management, Go-parity stdlib breadth

The first feature release on the 1.0 line2,073 tests432 stdlib modules

## Release notes

### Editions

Edition `"2027"` promotes two warnings to errors (W0005 container read-modify-write to **E0309**, W0003 SSRF-bypassable string comparison to **E0332**), proving the mechanism handles multiple semantic changes per edition; the default edition stays backward-compatible; `--edition=` or `KERN_EDITION` selects; an unknown edition is refused.

### Package management

`kern mod` / `kern get` delegate to the native `kern-pkg-port` manager (built once to a cached binary, exec'd, never linked into the compiler). Deterministic resolution by Go's Minimal Version Selection; `kern.sum` (`h1:<sha256-hex>`, trust-on-first-use then immutable) enforced on top of `kern.lock` and the Ed25519 `kern.trust` signature path.

### Compiled-regex handle API

`compile` / `is_match_compiled` / `find*_compiled` / `replace*_compiled` over a 256-slot handle table (compile once, match many), plus batch ops.

### Stdlib breadth

`std.flag`, `std.csv`, `std.tabwriter`, `std.base32`, `std.glob`, `std.mime`, `std.strconv`, `std.template` (with conditionals), `std.xml` (structured tree), `std.crc`, `std.mail`; `std.time` gained fixed-offset time zones, RFC 3339 parse, Duration and a drift-compensating Ticker.

### M:N scheduler

Cooperative scheduler with per-coroutine preemption, coroutine-aware HTTP context, and in-process zstd OCI layer read with a no-subprocess-escape invariant (SEAL-4 Step 2).

### file\_io restored to Go parity

Capability-confined filesystem resolution now caches the confined-root fd with per-call revalidation (2.68x slower to 0.94x).

### v1.0.0 compat corpus

12 frozen programs exercising core 1.0.0 features.

### By the numbers

2,073 tests (1,521 conformance + 85 compat + 467 negative). 432 stdlib modules (309 core + 123 in 10 bundled packages), 4,846 public functions. 59K-line self-hosted compiler (LLVM + native ARM64), 67K-line C runtime (42,207-line audited TCB).

Install

`$ curl -fsSL https://kern-lang.eu/install.sh | sh`

Upgrade with the same install command. Releases are signed.

[Get started ](https://kern-lang.eu/get-started)