canned-prompts/reference/canned_prompts.py
tegwick 8376a00a88 CANP-WP-0002 T06: revision v0.2, and section 23 rewritten
Closes the workplan. The format becomes `canned-prompt/v0.2`, and packages
declaring v0.1 remain valid — everything added across T01-T05 is additive, so
a v0.1 package means exactly what it always meant. That is the MINOR case
section 17 itself describes.

The spec file loses its version suffix: CannedPromptFormat-v0.1.md becomes
CannedPromptFormat.md, with the revision stated inside. One stable path that
never breaks a link, and no rename per revision; the version belongs in the
`format` string where tools actually read it.

Section 23 is rewritten into three parts rather than the planned two.
"Settled since v0.1" tables the five resolved questions against where each
rule now lives. "Still deferred" carries the eight unpromoted items plus
pattern-matching render checks. "Decided against" holds template inheritance
alone, because calling it deferred would misdescribe it — reopening it means
overturning a decision and answering four recorded objections, not filling a
gap.

Section 23 also names the two habits the five decisions turned out to share,
so later revisions follow them rather than rediscover them: separate the
deterministic half from the rest, and a package never asserts what it cannot
back.

The eval-rubric and registry-manifest schemas keep their own v0.1. They are
new in this revision and sit on their own version lines.

Reference CLI: ACCEPTED_FORMATS; an unknown revision is rejected naming what is
accepted. Tests 78 -> 81.

Example packages declare v0.2 and are bumped 0.1.0 -> 0.1.1 and 0.2.0 -> 0.2.1
as section 17 PATCH — metadata corrections with behavior unchanged.

Also refreshes section 22's worked example, which had drifted: it showed
pqrst-estimate at 0.1.0 with no composition, contradicting the package
actually in the repo. It now mirrors the real package and doubles as a
composition illustration.

CANP-WP-0002 is finished. CANP-WP-0003 carries forward the one residual: the
default registry's basename-derived name reads as `registry:`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bjefh8NUiEiahN4JLwoSKM

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 388925@bnt-lap001
Assistant-Session: 3507023f-e0fd-4a1e-9d90-a0d4217d1502
2026-09-06 14:22:45 +02:00

1284 lines
49 KiB
Python
Executable file

#!/usr/bin/env python3
"""Tiny reference CLI for Canned Prompt Format v0.1.
This implementation intentionally favors readability over features. It uses a
filesystem-backed local catalog and registry and never calls a model.
"""
from __future__ import annotations
import argparse
import json
import os
import re
import shutil
import sys
from dataclasses import dataclass, field
from pathlib import Path
from typing import Any, Iterable
import yaml
FORMAT = "canned-prompt/v0.2"
# v0.2 is additive, so a v0.1 package means exactly what it always meant (§ 3.2).
ACCEPTED_FORMATS = ("canned-prompt/v0.2", "canned-prompt/v0.1")
REGISTRY_FORMAT = "canned-prompt-registry/v0.1"
LOCAL_REGISTRY = "local"
REGISTRY_NAME_RE = re.compile(r"^[A-Za-z0-9][A-Za-z0-9._-]*$")
EVAL_RUBRIC_SCHEMA = "canned-prompts/eval-rubric/v0.1"
RENDER_CHECKS = ("contains", "not_contains", "resolves_all")
CAPABILITY_RE = re.compile(r"^[a-z0-9]+(?:-[a-z0-9]+)*$")
RESERVED_FILES = ("prompt.yaml", "README.md", "LICENSE")
RESERVED_DIRS = ("examples", "evals", "assets")
PLACEHOLDER_RE = re.compile(r"{{\s*([A-Za-z_][A-Za-z0-9_.-]*)\s*}}")
SEMVER_RE = re.compile(
r"^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)"
r"(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?"
r"(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$"
)
REQUIRED_FIELDS = ("format", "id", "name", "version", "summary", "template")
class CannedPromptError(Exception):
pass
def home_dir() -> Path:
return Path(os.environ.get("CANNED_PROMPTS_HOME", Path.home() / ".canned-prompts"))
def default_catalog() -> Path:
return home_dir() / "catalog"
def default_registry() -> Path:
return home_dir() / "registry"
def read_manifest(package_dir: Path) -> dict[str, Any]:
manifest_path = package_dir / "prompt.yaml"
if not manifest_path.is_file():
raise CannedPromptError(f"missing manifest: {manifest_path}")
try:
data = yaml.safe_load(manifest_path.read_text(encoding="utf-8"))
except yaml.YAMLError as exc:
raise CannedPromptError(f"invalid YAML in {manifest_path}: {exc}") from exc
if not isinstance(data, dict):
raise CannedPromptError("prompt.yaml must contain a mapping")
return data
def safe_relative_file(package_dir: Path, relative: str, field: str) -> Path:
if not isinstance(relative, str) or not relative.strip():
raise CannedPromptError(f"{field} must be a non-empty relative path")
candidate = (package_dir / relative).resolve()
root = package_dir.resolve()
try:
candidate.relative_to(root)
except ValueError as exc:
raise CannedPromptError(f"{field} escapes the package: {relative}") from exc
if not candidate.is_file():
raise CannedPromptError(f"{field} does not reference a file: {relative}")
return candidate
def declared_names(manifest: dict[str, Any]) -> set[str]:
names: set[str] = set()
inputs = manifest.get("inputs") or []
if not isinstance(inputs, list):
raise CannedPromptError("inputs must be a list")
for item in inputs:
if not isinstance(item, dict) or not isinstance(item.get("name"), str):
raise CannedPromptError("each input must be a mapping with a string name")
name = item["name"]
if name in names:
raise CannedPromptError(f"duplicate input/parameter name: {name}")
names.add(name)
parameters = manifest.get("parameters") or {}
if not isinstance(parameters, dict):
raise CannedPromptError("parameters must be a mapping")
for name, spec in parameters.items():
if not isinstance(name, str) or not isinstance(spec, dict):
raise CannedPromptError("parameters must map names to mappings")
if name in names:
raise CannedPromptError(f"duplicate input/parameter name: {name}")
names.add(name)
return names
def input_default_kind(item: dict[str, Any]) -> str:
"""Classify a default as 'none', 'static', 'derived', or 'included' (§ 6.1)."""
if "default" not in item:
return "none"
default = item["default"]
if isinstance(default, dict):
if "derive" in default and "include" in default:
return "conflict"
if "derive" in default:
return "derived"
if "include" in default:
return "included"
return "static"
def prompt_dependencies(manifest: dict[str, Any]) -> dict[str, dict[str, Any]]:
dependencies = manifest.get("dependencies") or {}
if not isinstance(dependencies, dict):
raise CannedPromptError("dependencies must be a mapping")
prompts = dependencies.get("prompts") or []
if not isinstance(prompts, list):
raise CannedPromptError("dependencies.prompts must be a list")
declared: dict[str, dict[str, Any]] = {}
for entry in prompts:
if isinstance(entry, str):
declared[entry] = {"id": entry}
elif isinstance(entry, dict) and isinstance(entry.get("id"), str):
if "version" in entry:
validate_version_selector(
entry["version"], f"dependency {entry['id']!r}"
)
declared[entry["id"]] = entry
else:
raise CannedPromptError(
"each prompt dependency must be an id string or a mapping with a string id"
)
return declared
def validate_capabilities(names: Any, where: str) -> list[str]:
"""Validation rule 20 of § 18: shape is checked, membership is not (§ 10.2)."""
if names is None:
return []
if not isinstance(names, list):
raise CannedPromptError(f"{where} must be a list")
for name in names:
if not isinstance(name, str) or not CAPABILITY_RE.match(name):
raise CannedPromptError(f"{where}: {name!r} must be lowercase kebab-case")
return list(names)
def validate_context_dependencies(manifest: dict[str, Any]) -> list[dict[str, Any]]:
"""Validation rule 19 of § 18.
A context dependency names something CPF does not package and cannot
resolve, so `description` is the only thing a consumer has to go on.
"""
dependencies = manifest.get("dependencies") or {}
entries = dependencies.get("context") or []
if not isinstance(entries, list):
raise CannedPromptError("dependencies.context must be a list")
for entry in entries:
if not isinstance(entry, dict):
raise CannedPromptError("each context dependency must be a mapping")
name = entry.get("name")
if not isinstance(name, str) or not CAPABILITY_RE.match(name):
raise CannedPromptError(
f"context dependency name {name!r} must be lowercase kebab-case; "
"context entries use 'name', not 'id', because nothing can look them up"
)
if not isinstance(entry.get("description"), str) or not entry["description"].strip():
raise CannedPromptError(
f"context dependency {name!r} must declare a description; nothing "
"else can explain a dependency the format does not package"
)
requirement = entry.get("requirement", "required")
if requirement not in ("required", "optional"):
raise CannedPromptError(
f"context dependency {name!r}: requirement must be 'required' or 'optional'"
)
return list(entries)
def read_eval(package_dir: Path, relative: str) -> dict[str, Any]:
path = safe_relative_file(package_dir, relative, "evals")
try:
data = yaml.safe_load(path.read_text(encoding="utf-8"))
except yaml.YAMLError as exc:
raise CannedPromptError(f"invalid YAML in {relative}: {exc}") from exc
if not isinstance(data, dict):
raise CannedPromptError(f"{relative}: an eval file must contain a mapping")
if not isinstance(data.get("schema"), str) or not data["schema"].strip():
raise CannedPromptError(f"{relative}: an eval file must declare a schema")
return data
def validate_eval(relative: str, spec: dict[str, Any], declared_examples: list[str]) -> None:
"""Validation rules 17-18 of § 18. Unknown schemas are ignored, not rejected."""
if spec["schema"] != EVAL_RUBRIC_SCHEMA:
return
if not isinstance(spec.get("name"), str) or not spec["name"].strip():
raise CannedPromptError(f"{relative}: eval must declare a name")
render = spec.get("render") or []
output = spec.get("output") or {}
if not render and not output:
raise CannedPromptError(
f"{relative}: eval asserts nothing; declare render checks or output criteria"
)
if not isinstance(render, list):
raise CannedPromptError(f"{relative}: render must be a list of checks")
for check in render:
if not isinstance(check, dict) or len(check) != 1:
raise CannedPromptError(
f"{relative}: each render check must be a single-key mapping"
)
(kind,) = check
if kind not in RENDER_CHECKS:
raise CannedPromptError(
f"{relative}: unknown render check {kind!r}; expected one of "
+ ", ".join(RENDER_CHECKS)
)
if output:
if not isinstance(output, dict):
raise CannedPromptError(f"{relative}: output must be a mapping")
criteria = output.get("criteria") or []
if not isinstance(criteria, list) or not all(isinstance(c, str) for c in criteria):
raise CannedPromptError(f"{relative}: output.criteria must be a list of strings")
example = spec.get("example")
if example is not None:
if not isinstance(example, str):
raise CannedPromptError(f"{relative}: example must be a path string")
if example not in declared_examples:
raise CannedPromptError(
f"{relative}: example {example!r} is not declared in the manifest's examples"
)
def check_composition_reference(
name: str, reference: str, field: str, declared: dict[str, dict[str, Any]]
) -> None:
if not reference.strip():
raise CannedPromptError(f"input {name!r}: {field} reference is empty")
if reference not in declared:
raise CannedPromptError(
f"input {name!r} {field}s {reference!r}, which is not declared "
"in dependencies.prompts"
)
if "version" not in declared[reference]:
raise CannedPromptError(
f"input {name!r} {field}s {reference!r}, so that dependency must "
"declare a version (§ 10.3)"
)
def validate_input_default(
item: dict[str, Any], declared: dict[str, dict[str, Any]]
) -> None:
"""Validation rules 11-16 of § 18."""
kind = input_default_kind(item)
if kind == "none":
return
name = item["name"]
if item.get("required", False):
raise CannedPromptError(
f"input {name!r} declares a default and required: true; a required "
"input is always supplied, so the default could never apply"
)
if kind == "static":
return
if kind == "conflict":
raise CannedPromptError(
f"input {name!r}: a default declares at most one of 'include' or 'derive'"
)
if kind == "included":
include = item["default"]["include"]
if not isinstance(include, str):
raise CannedPromptError(
f"input {name!r}: include must name a declared prompt dependency"
)
check_composition_reference(name, include, "include", declared)
return
derive = item["default"]["derive"]
if isinstance(derive, str):
check_composition_reference(name, derive, "derive", declared)
return
if isinstance(derive, dict):
prompt = derive.get("prompt")
if not isinstance(prompt, str) or not prompt.strip():
raise CannedPromptError(
f"input {name!r}: inline derive requires a non-empty prompt"
)
extra = sorted(set(derive) - {"prompt"})
if extra:
raise CannedPromptError(
f"input {name!r}: an inline derive cannot also reference a "
"dependency; unexpected keys: " + ", ".join(extra)
)
return
raise CannedPromptError(
f"input {name!r}: derive must be a dependency id or a mapping with a prompt"
)
def validate_package(package_dir: Path) -> dict[str, Any]:
package_dir = package_dir.resolve()
if not package_dir.is_dir():
raise CannedPromptError(f"package directory not found: {package_dir}")
manifest = read_manifest(package_dir)
missing = [field for field in REQUIRED_FIELDS if field not in manifest]
if missing:
raise CannedPromptError("missing required fields: " + ", ".join(missing))
if manifest["format"] not in ACCEPTED_FORMATS:
raise CannedPromptError(
f"unsupported format: {manifest['format']!r}; expected one of "
+ ", ".join(ACCEPTED_FORMATS)
)
package_id = manifest["id"]
if not isinstance(package_id, str) or not package_id.strip():
raise CannedPromptError("id must be a non-empty string")
if any(part in ("", ".", "..") for part in package_id.split("/")):
raise CannedPromptError("id contains an invalid path segment")
if re.search(r"[^A-Za-z0-9._/-]", package_id):
raise CannedPromptError("id contains unsupported characters")
version = manifest["version"]
if not isinstance(version, str) or not SEMVER_RE.match(version):
raise CannedPromptError("version must be semantic-version-like, e.g. 1.2.0")
template_path = safe_relative_file(package_dir, manifest["template"], "template")
for field in ("examples", "evals"):
refs = manifest.get(field) or []
if not isinstance(refs, list):
raise CannedPromptError(f"{field} must be a list")
for relative in refs:
safe_relative_file(package_dir, relative, field)
names = declared_names(manifest)
declared = prompt_dependencies(manifest)
for item in manifest.get("inputs") or []:
validate_input_default(item, declared)
validate_context_dependencies(manifest)
validate_capabilities(
(manifest.get("dependencies") or {}).get("capabilities"),
"dependencies.capabilities",
)
validate_capabilities(
(manifest.get("compatibility") or {}).get("capabilities"),
"compatibility.capabilities",
)
declared_examples = [str(path) for path in (manifest.get("examples") or [])]
for relative in manifest.get("evals") or []:
validate_eval(relative, read_eval(package_dir, relative), declared_examples)
template = template_path.read_text(encoding="utf-8")
placeholders = set(PLACEHOLDER_RE.findall(template))
undeclared = sorted(placeholders - names)
if undeclared:
raise CannedPromptError(
"template contains undeclared placeholders: " + ", ".join(undeclared)
)
return manifest
def check_registry_name(name: str) -> str:
if not isinstance(name, str) or not REGISTRY_NAME_RE.match(name):
raise CannedPromptError(
f"invalid registry name: {name!r}; expected letters, digits, '.', '-' or '_'"
)
return name
def parse_reference(reference: str) -> tuple[str | None, str]:
"""Split a qualified `<registry>:<id>` reference (§ 3.2)."""
if ":" not in reference:
return None, reference
registry, _, package_id = reference.partition(":")
if not registry or not package_id:
raise CannedPromptError(f"malformed reference: {reference!r}")
return check_registry_name(registry), package_id
def read_registry_manifest(registry: Path) -> dict[str, Any] | None:
"""Read an optional registry.yaml (§ 20.1). A bare directory is still valid."""
manifest_path = registry / "registry.yaml"
if not manifest_path.is_file():
return None
try:
data = yaml.safe_load(manifest_path.read_text(encoding="utf-8"))
except yaml.YAMLError as exc:
raise CannedPromptError(f"invalid YAML in {manifest_path}: {exc}") from exc
if not isinstance(data, dict):
raise CannedPromptError("registry.yaml must contain a mapping")
if data.get("format") != REGISTRY_FORMAT:
raise CannedPromptError(f"unsupported registry format: {data.get('format')!r}")
check_registry_name(data.get("name"))
namespaces = data.get("namespaces") or {}
if not isinstance(namespaces, dict):
raise CannedPromptError("registry namespaces must be a mapping")
for namespace, claim in namespaces.items():
if not isinstance(claim, dict):
raise CannedPromptError(f"namespace {namespace!r} must map to a mapping")
policy = claim.get("policy", "open")
if policy not in ("open", "closed"):
raise CannedPromptError(
f"namespace {namespace!r}: policy must be 'open' or 'closed'"
)
return data
def registry_name(registry: Path) -> str:
"""A registry's name: its manifest's, else its directory basename (§ 20.1)."""
manifest = read_registry_manifest(registry)
if manifest:
return manifest["name"]
return check_registry_name(registry.expanduser().resolve().name)
def namespace_policy(registry: Path, package_id: str) -> tuple[str, dict[str, Any] | None]:
manifest = read_registry_manifest(registry)
if not manifest:
return "open", None
namespace = package_id.split("/")[0] if "/" in package_id else package_id
claim = (manifest.get("namespaces") or {}).get(namespace)
if not claim:
return "open", None
return claim.get("policy", "open"), claim
def id_path(store: Path, package_id: str) -> Path:
parts = package_id.split("/")
if any(part in ("", ".", "..") for part in parts):
raise CannedPromptError("unsafe package id")
return store.joinpath(*parts)
def registry_package_path(registry: Path, package_id: str, version: str) -> Path:
"""A registry's own layout is flat: an id is unambiguous within a registry."""
return id_path(registry, package_id) / version
def catalog_package_path(catalog: Path, registry: str, package_id: str, version: str) -> Path:
"""The catalog is namespaced by registry (§ 20.2)."""
return id_path(catalog / check_registry_name(registry), package_id) / version
def validate_version_selector(value: Any, where: str) -> str:
"""A semver literal, `any`, `newest`, or a `>=` lower bound (§ 10.3)."""
if not isinstance(value, str) or not value.strip():
raise CannedPromptError(f"{where}: version must be a non-empty string")
selector = value.strip()
if selector in ("any", "newest"):
return selector
compact = selector.replace(" ", "")
if compact.startswith(">="):
if not SEMVER_RE.match(compact[2:]):
raise CannedPromptError(f"{where}: {value!r} is not a valid lower bound")
return compact
if not SEMVER_RE.match(selector):
raise CannedPromptError(
f"{where}: unsupported version selector {value!r}; expected a semver "
"literal, 'any', 'newest', or '>= X.Y.Z'"
)
return selector
def select_version(available: list[str], selector: str | None) -> str | None:
"""Pick a version from `available` (newest first) per a § 10.3 selector.
Each dependency is selected independently against what is present. There is
no constraint solving across a dependency graph; that stays a non-goal.
Prereleases are excluded from `any`, `newest` and `>=` (§ 17.1); only an
exact pin selects one, so publishing a release candidate never changes what
existing consumers resolve to.
"""
if not available:
return None
if selector is not None and selector not in ("any", "newest") and not selector.startswith(">="):
return selector if selector in available else None
stable = [version for version in available if not is_prerelease(version)]
if not stable:
return None
if selector is None or selector in ("any", "newest"):
return stable[0]
floor = parse_semver(selector[2:])
for version in stable:
if parse_semver(version) >= floor:
return version
return None
def parse_semver(value: str) -> tuple[Any, ...]:
"""A precedence key following SemVer § 11 (spec § 17.1).
A prerelease ranks below its own release, so `1.0.0-rc1` < `1.0.0`. Build
metadata is ignored. Unparseable versions sort below everything.
"""
match = SEMVER_RE.match(value)
if not match:
return (-1, -1, -1, 0, (), value)
major, minor, patch = (int(match.group(i)) for i in (1, 2, 3))
prerelease = match.group(4)
if prerelease is None:
# 1 outranks the 0 given to a prerelease of the same numeric version.
return (major, minor, patch, 1, (), "")
identifiers: list[tuple[int, int, str]] = []
for part in prerelease.split("."):
# Numeric identifiers compare numerically and rank below alphanumeric ones.
identifiers.append((0, int(part), "") if part.isdigit() else (1, 0, part))
return (major, minor, patch, 0, tuple(identifiers), "")
def is_prerelease(value: str) -> bool:
match = SEMVER_RE.match(value)
return bool(match and match.group(4) is not None)
def versions_at(base: Path) -> list[str]:
if not base.is_dir():
return []
versions = [p.name for p in base.iterdir() if p.is_dir() and (p / "prompt.yaml").is_file()]
return sorted(versions, key=parse_semver, reverse=True)
def pick_version(base: Path, label: str, version: str | None) -> Path:
available = versions_at(base)
if version:
path = base / version
if not (path / "prompt.yaml").is_file():
raise CannedPromptError(f"package not found: {label}@{version}")
return path
if not available:
raise CannedPromptError(f"package not found: {label}")
chosen = select_version(available, None)
if chosen is None:
raise CannedPromptError(
f"{label}: only prerelease versions are available "
f"({', '.join(available)}); name one exactly to use it"
)
return base / chosen
def resolve_in_registry(registry: Path, package_id: str, version: str | None) -> Path:
return pick_version(id_path(registry, package_id), package_id, version)
def catalog_registries(catalog: Path) -> list[str]:
if not catalog.is_dir():
return []
return sorted(p.name for p in catalog.iterdir() if p.is_dir())
def legacy_catalog_entry(catalog: Path, package_id: str) -> bool:
"""True if the pre-registry-scoped catalog layout holds this id."""
try:
base = id_path(catalog, package_id)
except CannedPromptError:
return False
return bool(versions_at(base))
def resolve_installed(
catalog: Path, reference: str, version: str | None
) -> tuple[Path, str]:
"""Resolve a bare id or a qualified `<registry>:<id>` against the catalog.
Returns the package directory and the registry it was installed from. A
bare id present in more than one registry is ambiguous and is reported, not
guessed (§ 3.2).
"""
registry, package_id = parse_reference(reference)
if registry is not None:
matches = [registry] if versions_at(id_path(catalog / registry, package_id)) else []
else:
matches = [
name
for name in catalog_registries(catalog)
if versions_at(id_path(catalog / name, package_id))
]
if not matches:
if registry is None and legacy_catalog_entry(catalog, package_id):
raise CannedPromptError(
f"{package_id} is stored in the pre-registry-scoped catalog layout; "
"catalogs are now namespaced by registry (§ 20.2). Re-add or "
"re-install the package, or move it under a registry directory"
)
raise CannedPromptError(f"package not found: {reference}")
if len(matches) > 1:
raise CannedPromptError(
f"{package_id} is installed from more than one registry: "
+ ", ".join(f"{name}:{package_id}" for name in matches)
+ " — qualify the reference"
)
name = matches[0]
return pick_version(id_path(catalog / name, package_id), f"{name}:{package_id}", version), name
def package_members(package_dir: Path, manifest: dict[str, Any]) -> set[str]:
"""Relative paths that belong to the package (§ 2).
Reserved paths plus whatever a manifest field references. Everything else in
the working directory — `.git`, a virtualenv, scratch files — is not part of
the package.
"""
members: set[str] = set()
for name in RESERVED_FILES:
if (package_dir / name).is_file():
members.add(name)
for name in RESERVED_DIRS:
directory = package_dir / name
if directory.is_dir():
for path in directory.rglob("*"):
if path.is_file():
members.add(path.relative_to(package_dir).as_posix())
referenced = [("template", manifest["template"])]
for key in ("examples", "evals"):
referenced.extend((key, relative) for relative in (manifest.get(key) or []))
for field, relative in referenced:
resolved = safe_relative_file(package_dir, relative, field)
members.add(resolved.relative_to(package_dir.resolve()).as_posix())
return members
def skipped_entries(package_dir: Path, members: set[str]) -> list[str]:
"""Top-level entries that will not be packaged.
Reported by name only; nothing walks into an ignored directory, so a stray
virtualenv costs nothing to skip.
"""
covered = {member.split("/", 1)[0] for member in members}
skipped = []
for entry in sorted(package_dir.iterdir()):
if entry.name in covered:
continue
skipped.append(entry.name + ("/" if entry.is_dir() else ""))
return skipped
def copy_package(src: Path, dst: Path, manifest: dict[str, Any], what: str) -> list[str]:
"""Copy only what belongs to the package (§ 2). Returns what was skipped."""
if dst.exists():
raise CannedPromptError(f"{what} already exists: {dst}")
members = package_members(src, manifest)
skipped = skipped_entries(src, members)
dst.mkdir(parents=True)
for relative in sorted(members):
target = dst / relative
target.parent.mkdir(parents=True, exist_ok=True)
shutil.copy2(src / relative, target)
return skipped
def report_skipped(skipped: list[str]) -> None:
if skipped:
print(
"not packaged (not a reserved path, not referenced by the manifest): "
+ ", ".join(skipped),
file=sys.stderr,
)
def iter_catalog(catalog: Path) -> Iterable[tuple[str, Path, dict[str, Any]]]:
for name in catalog_registries(catalog):
for manifest_path in (catalog / name).rglob("prompt.yaml"):
package_dir = manifest_path.parent
try:
manifest = validate_package(package_dir)
except CannedPromptError:
continue
yield name, package_dir, manifest
def cmd_add(args: argparse.Namespace) -> None:
src = Path(args.path)
manifest = validate_package(src)
catalog = Path(args.catalog).expanduser()
registry = check_registry_name(args.as_registry)
dst = catalog_package_path(catalog, registry, manifest["id"], manifest["version"])
report_skipped(copy_package(src.resolve(), dst, manifest, "catalog package"))
print(f"added {registry}:{manifest['id']}@{manifest['version']} -> {dst}")
def cmd_publish(args: argparse.Namespace) -> None:
src = Path(args.path)
manifest = validate_package(src)
registry = Path(args.registry).expanduser()
name = registry_name(registry) if registry.is_dir() else None
policy, claim = namespace_policy(registry, manifest["id"]) if registry.is_dir() else ("open", None)
if policy == "closed":
owner = (claim or {}).get("owner")
suffix = f" (owner: {owner})" if owner else ""
print(
f"warning: namespace {manifest['id'].split('/')[0]!r} is declared closed"
f"{suffix}; this tool cannot authenticate a publisher",
file=sys.stderr,
)
dst = registry_package_path(registry, manifest["id"], manifest["version"])
report_skipped(copy_package(src.resolve(), dst, manifest, "published package"))
label = f"{name}:{manifest['id']}" if name else manifest["id"]
print(f"published {label}@{manifest['version']} -> {dst}")
def cmd_install(args: argparse.Namespace) -> None:
registry = Path(args.registry).expanduser()
catalog = Path(args.catalog).expanduser()
name = registry_name(registry)
qualifier, package_id = parse_reference(args.id)
if qualifier is not None and qualifier != name:
raise CannedPromptError(
f"reference names registry {qualifier!r} but --registry is {name!r}"
)
src = resolve_in_registry(registry, package_id, args.version)
manifest = validate_package(src)
dst = catalog_package_path(catalog, name, manifest["id"], manifest["version"])
copy_package(src, dst, manifest, "catalog package")
print(f"installed {name}:{manifest['id']}@{manifest['version']} -> {dst}")
def cmd_search(args: argparse.Namespace) -> None:
catalog = Path(args.catalog).expanduser()
query = args.query.lower()
matches: list[dict[str, str]] = []
for registry, _, manifest in iter_catalog(catalog):
haystack = " ".join(
[
str(manifest.get("id", "")),
str(manifest.get("name", "")),
str(manifest.get("summary", "")),
" ".join(str(tag) for tag in (manifest.get("tags") or [])),
]
).lower()
if query in haystack:
matches.append(
{
"registry": registry,
"id": manifest["id"],
"version": manifest["version"],
"name": manifest["name"],
"summary": manifest["summary"],
}
)
matches.sort(key=lambda m: (m["registry"], m["id"], parse_semver(m["version"])))
if args.json:
print(json.dumps(matches, indent=2, ensure_ascii=False))
return
if not matches:
print("no matches")
return
for item in matches:
print(f"{item['registry']}:{item['id']}@{item['version']} {item['name']}")
print(f" {item['summary']}")
def cmd_show(args: argparse.Namespace) -> None:
catalog = Path(args.catalog).expanduser()
package_dir, _ = resolve_installed(catalog, args.id, args.version)
manifest = validate_package(package_dir)
if args.json:
print(json.dumps(manifest, indent=2, ensure_ascii=False))
else:
print(yaml.safe_dump(manifest, sort_keys=False, allow_unicode=True).rstrip())
def coerce_value(raw: Any, spec: dict[str, Any]) -> Any:
kind = spec.get("type", "string")
if not isinstance(raw, str):
# Already typed — from a YAML fixture rather than the command line.
# Validate membership, but do not try to parse it.
if kind == "enum" and raw not in (spec.get("values") or []):
raise CannedPromptError(
f"invalid enum value {raw!r}; expected one of {spec.get('values') or []}"
)
return raw
if kind == "boolean":
lowered = raw.lower()
if lowered in {"true", "1", "yes", "on"}:
return True
if lowered in {"false", "0", "no", "off"}:
return False
raise CannedPromptError(f"cannot parse boolean value: {raw}")
if kind == "integer":
try:
return int(raw)
except ValueError as exc:
raise CannedPromptError(f"cannot parse integer value: {raw}") from exc
if kind == "number":
try:
return float(raw)
except ValueError as exc:
raise CannedPromptError(f"cannot parse numeric value: {raw}") from exc
if kind == "enum":
values = spec.get("values") or []
if raw not in values:
raise CannedPromptError(f"invalid enum value {raw!r}; expected one of {values}")
return raw
def supplied_values(pairs: list[str]) -> dict[str, str]:
values: dict[str, str] = {}
for pair in pairs:
if "=" not in pair:
raise CannedPromptError(f"--set expects name=value, got: {pair}")
name, value = pair.split("=", 1)
if not name:
raise CannedPromptError("--set name cannot be empty")
values[name] = value
return values
@dataclass
class Resolution:
"""The outcome of § 5.1 resolution, separate from rendering."""
values: dict[str, Any] = field(default_factory=dict)
origins: dict[str, str] = field(default_factory=dict)
underivable: list[str] = field(default_factory=list)
def resolve_inputs(
manifest: dict[str, Any],
raw_values: dict[str, str],
composer: "Composer | None" = None,
inherited: dict[str, Any] | None = None,
) -> Resolution:
"""Resolve inputs and parameters per § 5.1.
`composer`, when supplied, satisfies `include` defaults by rendering the
included package (§ 10.4). Inclusion is deterministic, so a tool that can
render can satisfy it; derivation is not, and this tool never calls a model,
so a derived default is satisfied only by its static fallback `value`.
`inherited` carries the including package's already-resolved values into an
included package (§ 10.4). Those values are used as-is rather than coerced,
and do not count as caller-supplied.
"""
result = Resolution()
inherited = inherited or {}
known: set[str] = set()
declared = prompt_dependencies(manifest)
def compose(name: str, item: dict[str, Any]) -> None:
default = item["default"]
reference = default["include"]
if composer is not None:
entry = declared.get(reference) or {}
result.values[name] = composer(reference, entry.get("version"), result.values)
result.origins[name] = f"included from {reference}"
return
if "value" in default:
result.values[name] = default["value"]
result.origins[name] = "fallback (not included)"
else:
result.origins[name] = "unresolved (included, no fallback)"
result.underivable.append(name)
# Parameters resolve first: a composed input inherits the including
# package's resolved values (§ 10.4), so those must already be settled.
parameters = manifest.get("parameters") or {}
for name, spec in parameters.items():
known.add(name)
if name in raw_values:
result.values[name] = coerce_value(raw_values[name], spec)
result.origins[name] = "supplied"
elif name in inherited:
result.values[name] = inherited[name]
result.origins[name] = "inherited"
elif "default" in spec:
result.values[name] = spec["default"]
result.origins[name] = "default"
else:
result.origins[name] = "unresolved (no default)"
inputs = manifest.get("inputs") or []
for item in inputs:
name = item["name"]
known.add(name)
if name in raw_values:
result.values[name] = raw_values[name]
result.origins[name] = "supplied"
continue
if name in inherited:
result.values[name] = inherited[name]
result.origins[name] = "inherited"
continue
if item.get("required", False):
raise CannedPromptError(f"missing required input: {name}")
kind = input_default_kind(item)
if kind == "static":
result.values[name] = item["default"]
result.origins[name] = "default"
elif kind == "included":
compose(name, item)
elif kind == "derived":
default = item["default"]
if "value" in default:
result.values[name] = default["value"]
result.origins[name] = "fallback (not derived)"
else:
result.origins[name] = "unresolved (derived, no fallback)"
result.underivable.append(name)
else:
result.origins[name] = "unresolved (optional, no default)"
# Report inputs before parameters regardless of resolution order.
ordered = {item["name"]: result.origins[item["name"]] for item in inputs}
ordered.update({name: result.origins[name] for name in parameters})
result.origins = ordered
unknown = sorted(set(raw_values) - known)
if unknown:
raise CannedPromptError("unknown values: " + ", ".join(unknown))
return result
def resolve_values(manifest: dict[str, Any], raw_values: dict[str, str]) -> dict[str, Any]:
return resolve_inputs(manifest, raw_values).values
class CatalogComposer:
"""Satisfies `include` defaults from the catalog (§ 10.4).
Inclusion is text composition: the included package is rendered and its text
is inlined. No model is involved, so this is deterministic.
"""
def __init__(self, catalog: Path) -> None:
self.catalog = catalog
self._stack: list[str] = []
def __call__(
self, reference: str, selector: str | None, outer_values: dict[str, Any]
) -> str:
if reference in self._stack:
raise CannedPromptError(
"inclusion cycle: " + " -> ".join([*self._stack, reference])
)
registry, package_id = parse_reference(reference)
names = (
[registry]
if registry is not None
else [
name
for name in catalog_registries(self.catalog)
if versions_at(id_path(self.catalog / name, package_id))
]
)
if len(names) > 1:
raise CannedPromptError(
f"included package {package_id} is present in more than one registry: "
+ ", ".join(f"{name}:{package_id}" for name in names)
+ " — qualify the dependency id"
)
if not names:
raise CannedPromptError(f"included package not found: {reference}")
base = id_path(self.catalog / names[0], package_id)
version = select_version(versions_at(base), selector)
if version is None:
raise CannedPromptError(
f"included package {reference}: no version satisfies {selector!r}"
)
package_dir = base / version
manifest = validate_package(package_dir)
template_path = safe_relative_file(package_dir, manifest["template"], "template")
self._stack.append(reference)
try:
inner = resolve_inputs(manifest, {}, composer=self, inherited=outer_values)
except CannedPromptError as exc:
if str(exc).startswith("inclusion cycle:"):
raise
raise CannedPromptError(f"while including {reference}: {exc}") from exc
finally:
self._stack.pop()
text = template_path.read_text(encoding="utf-8")
used = set(PLACEHOLDER_RE.findall(text))
missing = sorted(used - set(inner.values))
if missing:
raise CannedPromptError(
f"included package {reference} has unresolved inputs the including "
"package does not supply: " + ", ".join(missing)
)
return render_template(text, inner.values)
Composer = CatalogComposer
def render_template(template: str, values: dict[str, Any]) -> str:
def replace(match: re.Match[str]) -> str:
name = match.group(1)
if name not in values:
raise CannedPromptError(f"unresolved placeholder: {name}")
value = values[name]
if isinstance(value, bool):
return "true" if value else "false"
if isinstance(value, (dict, list)):
return json.dumps(value, ensure_ascii=False)
return str(value)
return PLACEHOLDER_RE.sub(replace, template)
def cmd_render(args: argparse.Namespace) -> None:
catalog = Path(args.catalog).expanduser()
package_dir, _ = resolve_installed(catalog, args.id, args.version)
manifest = validate_package(package_dir)
template_path = safe_relative_file(package_dir, manifest["template"], "template")
raw = supplied_values(args.set_values)
resolution = resolve_inputs(manifest, raw, composer=CatalogComposer(catalog))
template = template_path.read_text(encoding="utf-8")
used = set(PLACEHOLDER_RE.findall(template))
blocked = sorted(used.intersection(resolution.underivable))
if blocked:
raise CannedPromptError(
"cannot render: this tool does not derive values, and these inputs "
"declare a derived default with no static fallback: "
+ ", ".join(blocked)
+ " — supply them with --set, or add a fallback `value` to the default"
)
rendered = render_template(template, resolution.values)
print(rendered, end="" if rendered.endswith("\n") else "\n")
def cmd_resolve(args: argparse.Namespace) -> None:
catalog = Path(args.catalog).expanduser()
package_dir, _ = resolve_installed(catalog, args.id, args.version)
manifest = validate_package(package_dir)
raw = supplied_values(args.set_values)
resolution = resolve_inputs(manifest, raw, composer=CatalogComposer(catalog))
if args.json:
print(
json.dumps(
{
"values": resolution.values,
"origins": resolution.origins,
"underivable": resolution.underivable,
},
indent=2,
ensure_ascii=False,
)
)
return
width = max((len(name) for name in resolution.origins), default=0)
origin_width = max((len(o) for o in resolution.origins.values()), default=0)
for name, origin in resolution.origins.items():
if name in resolution.values:
preview = str(resolution.values[name]).replace("\n", " ")
if len(preview) > 48:
preview = preview[:45] + "..."
print(f"{name:<{width}} {origin:<{origin_width}} {preview}")
else:
print(f"{name:<{width}} {origin}")
dependencies = manifest.get("dependencies") or {}
capabilities = dependencies.get("capabilities") or []
context = [
entry
for entry in (dependencies.get("context") or [])
if entry.get("requirement", "required") == "required"
]
if capabilities or context:
print()
print("requires (this tool cannot verify these):")
for name in capabilities:
print(f" capability {name}")
for entry in context:
print(f" context {entry['name']}{entry['description'].strip()}")
if resolution.underivable:
print()
plural = len(resolution.underivable) > 1
print(
"note: "
+ ", ".join(resolution.underivable)
+ (" declare" if plural else " declares")
+ " a derived default this tool cannot satisfy; rendering will fail "
+ ("if the template uses them" if plural else "if the template uses it")
)
def load_example_values(package_dir: Path, relative: str) -> dict[str, Any]:
path = safe_relative_file(package_dir, relative, "examples")
try:
data = yaml.safe_load(path.read_text(encoding="utf-8"))
except yaml.YAMLError as exc:
raise CannedPromptError(f"invalid YAML in {relative}: {exc}") from exc
if not isinstance(data, dict):
raise CannedPromptError(f"{relative}: an example must contain a mapping")
values = data.get("values") or {}
if not isinstance(values, dict):
raise CannedPromptError(f"{relative}: example values must be a mapping")
return values
def run_render_checks(
rendered: str, resolution: Resolution, checks: list[dict[str, Any]]
) -> list[tuple[bool, str]]:
"""Evaluate § 12.1 render checks. Deterministic: no model is involved."""
results: list[tuple[bool, str]] = []
for check in checks:
(kind,) = check
expected = check[kind]
if kind == "contains":
results.append((str(expected) in rendered, f'contains "{expected}"'))
elif kind == "not_contains":
results.append((str(expected) not in rendered, f'not_contains "{expected}"'))
elif kind == "resolves_all":
unresolved = sorted(set(resolution.origins) - set(resolution.values))
ok = (not unresolved) if expected else bool(unresolved)
detail = f" ({', '.join(unresolved)})" if unresolved else ""
results.append((ok, f"resolves_all{detail}"))
return results
def cmd_eval(args: argparse.Namespace) -> None:
catalog = Path(args.catalog).expanduser()
package_dir, registry = resolve_installed(catalog, args.id, args.version)
manifest = validate_package(package_dir)
template_path = safe_relative_file(package_dir, manifest["template"], "template")
template = template_path.read_text(encoding="utf-8")
relatives = manifest.get("evals") or []
if not relatives:
print(f"{registry}:{manifest['id']}@{manifest['version']} no evals declared")
return
print(f"{registry}:{manifest['id']}@{manifest['version']}")
failures = 0
for relative in relatives:
spec = read_eval(package_dir, relative)
if spec["schema"] != EVAL_RUBRIC_SCHEMA:
print(f" {relative} schema {spec['schema']} not recognized — skipped")
continue
print(f" {relative} ({spec['name']})")
checks = spec.get("render") or []
if checks:
values = (
load_example_values(package_dir, spec["example"])
if spec.get("example")
else {}
)
resolution = resolve_inputs(
manifest, values, composer=CatalogComposer(catalog)
)
missing = sorted(set(PLACEHOLDER_RE.findall(template)) - set(resolution.values))
rendered = "" if missing else render_template(template, resolution.values)
if missing:
print(f" render FAIL cannot render: unresolved {', '.join(missing)}")
failures += 1
for ok, label in run_render_checks(rendered, resolution, checks):
print(f" render {'PASS' if ok else 'FAIL'} {label}")
failures += 0 if ok else 1
criteria = (spec.get("output") or {}).get("criteria") or []
if criteria:
print(
f" output -- {len(criteria)} criteria declared "
"(not run: judging output needs a model)"
)
if failures:
raise CannedPromptError(f"{failures} render check(s) failed")
def build_parser() -> argparse.ArgumentParser:
parser = argparse.ArgumentParser(prog="canned-prompts", description=__doc__)
sub = parser.add_subparsers(dest="command", required=True)
add = sub.add_parser("add", help="add a package directory to the local catalog")
add.add_argument("path")
add.add_argument("--catalog", default=str(default_catalog()))
add.add_argument(
"--as",
dest="as_registry",
default=LOCAL_REGISTRY,
metavar="REGISTRY",
help=f"catalog registry name to file the package under (default: {LOCAL_REGISTRY})",
)
add.set_defaults(func=cmd_add)
search = sub.add_parser("search", help="search the local catalog")
search.add_argument("query")
search.add_argument("--catalog", default=str(default_catalog()))
search.add_argument("--json", action="store_true")
search.set_defaults(func=cmd_search)
show = sub.add_parser("show", help="show an installed package manifest")
show.add_argument("id")
show.add_argument("--version")
show.add_argument("--catalog", default=str(default_catalog()))
show.add_argument("--json", action="store_true")
show.set_defaults(func=cmd_show)
render = sub.add_parser("render", help="render an installed prompt template")
render.add_argument("id")
render.add_argument("--version")
render.add_argument("--catalog", default=str(default_catalog()))
render.add_argument("--set", dest="set_values", action="append", default=[], metavar="NAME=VALUE")
render.set_defaults(func=cmd_render)
evaluate = sub.add_parser("eval", help="run an installed package's render checks")
evaluate.add_argument("id")
evaluate.add_argument("--version")
evaluate.add_argument("--catalog", default=str(default_catalog()))
evaluate.set_defaults(func=cmd_eval)
resolve = sub.add_parser("resolve", help="report how each input and parameter resolves")
resolve.add_argument("id")
resolve.add_argument("--version")
resolve.add_argument("--catalog", default=str(default_catalog()))
resolve.add_argument("--set", dest="set_values", action="append", default=[], metavar="NAME=VALUE")
resolve.add_argument("--json", action="store_true")
resolve.set_defaults(func=cmd_resolve)
install = sub.add_parser("install", help="install a package from a filesystem registry")
install.add_argument("id")
install.add_argument("--version")
install.add_argument("--catalog", default=str(default_catalog()))
install.add_argument("--registry", default=str(default_registry()))
install.set_defaults(func=cmd_install)
publish = sub.add_parser("publish", help="publish a package to a filesystem registry")
publish.add_argument("path")
publish.add_argument("--registry", default=str(default_registry()))
publish.set_defaults(func=cmd_publish)
return parser
def main(argv: list[str] | None = None) -> int:
parser = build_parser()
args = parser.parse_args(argv)
try:
args.func(args)
return 0
except CannedPromptError as exc:
print(f"error: {exc}", file=sys.stderr)
return 2
if __name__ == "__main__":
raise SystemExit(main())