fix: only document sources that are actually committed

The "Sources on main, not yet released" table listed parlamint_pl, linking
data/parlamint_pl/parlamint_pl.md — a path that does not exist on main and
404s for every reader. make_docs reads the working tree, so an uncommitted
data/ directory in whoever regenerates the docs becomes a published claim
about the main branch.

make_docs now asks git which data/ directories are committed and leaves the
rest out of the README, naming them on stdout instead. The datasheet is still
written first, so a contributor can generate it in the same commit that adds
the data. The check disables itself when git cannot answer.

Also drops parlamint_pl from the CHANGELOG's Unreleased entry, which made the
same claim.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UXd7RSpYjF6SX2fFMygxic

CHANGELOG.md

@@ -2,8 +2,8 @@
 
 ## Unreleased (on main)
 
-- `wiktionary_examples`, `sejm_api` and `parlamint_pl` are built, documented and
-  present on the main branch but have never been admitted to a stable release.
+- `wiktionary_examples` and `sejm_api` are built, documented and present on
+  the main branch but have never been admitted to a stable release.
   They are excluded from every release total until a release entry admits them.
   The registry records this as `release: None` in `src/sources.py`; release
   totals count only sources whose `release` is set and not newer than the

README.md

@@ -189,7 +189,6 @@ Built and documented, but **not** part of v0.2.5 and excluded from every total a
 
 | source | description | license | documents | tokens |
 |---|---|---|---:|---:|
-| [parlamint_pl](data/parlamint_pl/parlamint_pl.md) | ParlaMint-PL (parliamentary debates, 2015-2022) | `CC-BY-4.0` | 686 | 95.4M |
 | [sejm_api](data/sejm_api/sejm_api.md) | Sejm API parliamentary speeches (2023 onward) | `public-domain (official documents)` | 38,812 | 36.3M |
 | [wiktionary_examples](data/wiktionary_examples/wiktionary_examples.md) | Polish Wiktionary usage examples | `CC-BY-SA-3.0` | 8,639 | 1.1M |
 

src/make_docs.py

@@ -9,7 +9,7 @@ Implements the "Documented" principle (datasheets, Gebru et al. 2021) and the
 aggregate README table (paper 2508.02271).
 """
 from __future__ import annotations
-import json, sys
+import json, subprocess, sys
 from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).resolve().parent))
@@ -136,8 +136,25 @@ Llama-3 count is computed at release.
 """
 
 
+def committed_sources():
+    """Source names whose data/ directory is committed -- i.e. actually on main.
+
+    make_docs reads the working tree, so an uncommitted data/<name>/ would be
+    written into the README as a source "on main" and linked to a path that 404s
+    for everyone else. None when git cannot answer, which disables the check
+    rather than the tool.
+    """
+    try:
+        out = subprocess.run(["git", "ls-tree", "-d", "--name-only", "HEAD", "data/"],
+                             cwd=ROOT, capture_output=True, text=True, check=True).stdout
+    except (OSError, subprocess.CalledProcessError):
+        return None
+    return {line.rstrip("/").split("/")[-1] for line in out.split()}
+
+
 def main():
     current = parse_version(VERSION)
+    committed = committed_sources()
     rows, pending, tot_doc, tot_tok, tot_chr = [], [], 0, 0, 0
     for name, cfg in SOURCES.items():
         st = load_stats(name)
@@ -147,6 +164,13 @@ def main():
         # date) opt out of template regeneration to avoid clobbering it.
         if not cfg.get("custom_datasheet"):
             write_text(ROOT / "data" / name / f"{name}.md", datasheet(name, cfg, st))
+        # The datasheet is written above, before this check: a contributor
+        # generates it in the same commit that adds the data, so it cannot
+        # require the data to already be committed.
+        if committed is not None and name not in committed:
+            print(f"  ! {name}: data/{name}/ is not committed - datasheet written, "
+                  "but left out of the README")
+            continue
         release = cfg.get("release")
         if release is None or parse_version(release) > current:
             # Built and on main, but not admitted to this release: never counted.