Extract sigil-log from sigil monorepo

Message

This is the reference migration for the sigil-ecosystem modularization effort: sigil-log is the smallest / simplest candidate and serves as the template for subsequent extractions (sigil-http, sigil-json, sigil-mcp, ...).

The prior packages/sigil-log/ history in the monorepo is preserved here at the repo root via git filter-repo --path-rename. On top of that history this commit adds:

- README.md - standalone-repo usage, API summary, build/test, license - .gitignore - build/ and .sigil/ - manifest.scm - minimal guix-shell (pure-Scheme pkg, no vendored C) - dev-redirects.sgl - point codeberg:sigil/sigil at ../sigil checkout - package.sgl - explicit version "0.13.0", url flipped to codeberg.org/sigil/sigil-log, from-workspace deps on sigil-stdlib and sigil-json converted to from-git refs pinned to ^0.13.0 - sigil.lock - sigil deps install output, both deps resolve to v0.13.1

Verified: sigil build clean, sigil test 25/25 passing.

The playbook distilled from this extraction lives in folio at procedures/sigil-package-extraction.

Changed

 .gitignore        |  2 ++
 README.md         | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 dev-redirects.sgl |  6 ++++++
 manifest.scm      | 10 ++++++++++
 package.sgl       |  7 ++++---
 sigil.lock        | 13 +++++++++++++
 6 files changed, 101 insertions(+), 3 deletions(-)

Diff

.gitignoreadded

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build/

.sigil/

README.mdadded

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# sigil-log

Structured logging for [Sigil](https://codeberg.org/sigil/sigil).

Provides configurable log levels, text and JSON output formats, per-module

filtering, and lazy macros that skip evaluation when the level is inactive.

This package was extracted from the sigil monorepo — the in-tree history

under `packages/sigil-log/` is preserved here as `master`.

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## Usage

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```scheme

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(import (sigil log))

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(log-info "Server started" port: 8080)

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(log-warn "Slow query" duration-ms: 1200)

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(log-error "Request failed" path: "/api" status: 500)

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;; Switch output format, raise/lower level

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(log-configure! level: 'debug format: 'json)

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;; Lazy macros — the argument expressions are not evaluated if the

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;; current level suppresses the call site.

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(log-debug* "result" value: (expensive-computation))

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```

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## API

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### `(sigil log)`

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| Procedure / macro | Purpose |

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|-------------------|---------|

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| `log-configure!` | Set level, format, output target |

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| `log-configure-from-args!` | Parse `--log-level` / `--log-format` from a CLI argv |

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| `log-trace` / `log-debug` / `log-info` / `log-warn` / `log-error` / `log-fatal` | Emit at level |

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| `log-trace*` / `log-debug*` / `log-info*` / `log-warn*` / `log-error*` / `log-fatal*` | Lazy variants — skip argument evaluation when level inactive |

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| `log-level-active?` | Query whether a level would be emitted |

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| `current-log-level` | Return the currently configured level |

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Levels, low to high: `trace`, `debug`, `info`, `warn`, `error`, `fatal`.

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## Dependencies

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- `sigil-stdlib`

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- `sigil-json`

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Both are workspace siblings in the sigil monorepo and are consumed here

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as `from-git` refs pinned to `^0.13.0`.

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## Build

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```sh

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sigil deps install

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sigil build

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```

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## Testing

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```sh

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sigil test

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```

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## License

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BSD-3-Clause.

dev-redirects.sgladded

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;; Development redirects — point dependencies at local Sigil checkout

(redirects

repos: (list

(for-repo

url: "codeberg:sigil/sigil"

use: (from-path dir: "../sigil"))))

manifest.scmadded

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;; sigil-log Development Environment

;; Use with: guix shell -m manifest.scm

;;

;; sigil-log is pure Scheme with no vendored C, so the environment

;; only needs the common Sigil build toolchain.

(specifications->manifest

'("gcc-toolchain"

"make"

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"pkg-config"))

package.sglmodified

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(package

name: "sigil-log"

version: "0.13.0"

description: "Structured logging for Sigil"

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url: "https://codeberg.org/sigil/sigil"

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url: "https://codeberg.org/sigil/sigil-log"

license: "BSD-3-Clause"

authors: (list "David Wilson <[email protected]>")

dependencies: (list

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(from-workspace name: "sigil-stdlib")

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(from-workspace name: "sigil-json")))

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(from-git url: "codeberg:sigil/sigil" package: "sigil-stdlib" version: "^0.13.0")

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(from-git url: "codeberg:sigil/sigil" package: "sigil-json" version: "^0.13.0")))

sigil.lockadded

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;; Auto-generated by sigil deps install. Do not edit.

(lock

(package name: "sigil-stdlib"

url: "codeberg:sigil/sigil"

ref: "^0.13.0"

sha: "8738c6f0665f6593795daf98d63839d181b17a4f"

package-selector: "sigil-stdlib")

(package name: "sigil-json"

url: "codeberg:sigil/sigil"

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ref: "^0.13.0"

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sha: "8738c6f0665f6593795daf98d63839d181b17a4f"

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package-selector: "sigil-json")

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)