Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

packaging/crates.py

@@ -0,0 +1,57 @@
+"""Notices of every crate built into packages. Usage: crates.py <package>..."""
+import json
+import pathlib
+import subprocess
+import sys
+
+NAMES = ("licen", "copying", "notice", "copyright", "unlicense")
+
+root = pathlib.Path(__file__).resolve().parent.parent
+standard = root / "packaging" / "licenses"
+host = next(line.split()[1] for line in subprocess.run(
+    ["rustc", "-vV"], check=True, capture_output=True, text=True).stdout.splitlines() if line.startswith("host:"))
+# Only what this machine's build links.
+meta = json.loads(subprocess.run(
+    ["cargo", "metadata", "--format-version", "1", "--locked", "--filter-platform", host,
+     "--manifest-path", str(root / "Cargo.toml")],
+    check=True, capture_output=True, text=True).stdout)
+by_id = {package["id"]: package for package in meta["packages"]}
+own = set(meta["workspace_members"])
+nodes = {node["id"]: node for node in meta["resolve"]["nodes"]}
+# What links in: normal edges, for this machine's target.
+wanted, stack = set(), [pid for pid in own if by_id[pid]["name"] in sys.argv[1:]]
+if len(stack) != len(sys.argv) - 1:
+    sys.exit(f"crates.py: unknown package among {sys.argv[1:]}")
+while stack:
+    pid = stack.pop()
+    if pid in wanted:
+        continue
+    wanted.add(pid)
+    for dep in nodes[pid]["deps"]:
+        if any(kind["kind"] is None for kind in dep["dep_kinds"]):
+            stack.append(dep["pkg"])
+
+out, missing = [], []
+for pid in sorted(wanted - own, key=lambda pid: (by_id[pid]["name"], by_id[pid]["version"])):
+    package = by_id[pid]
+    folder = pathlib.Path(package["manifest_path"]).parent
+    files = sorted(path for path in folder.iterdir()
+                   if path.is_file() and path.name.lower().startswith(NAMES))
+    if package.get("license_file"):
+        files.append(folder / package["license_file"])
+    head = f"{package['name']} {package['version']} — {package['license'] or 'no licence field'}"
+    out.append("=" * 78 + f"\n{head}\n" + "=" * 78)
+    if files:
+        out += [f"--- {path.name}\n{path.read_text(errors='replace')}" for path in dict.fromkeys(files)]
+    else:
+        # No file shipped: the expression's standard text, with its authors.
+        ids = (package["license"] or "").replace("(", " ").replace(")", " ").replace("/", " ").split()
+        text = next((standard / f"{spdx}.txt" for spdx in ids if (standard / f"{spdx}.txt").is_file()), None)
+        if text is None:
+            missing.append(head)
+            continue
+        authors = ", ".join(package["authors"]) or package["name"] + " developers"
+        out.append(f"Copyright (c) {authors}\n--- {text.stem}\n{text.read_text()}")
+if missing:
+    sys.exit("crates.py: no licence text for:\n  " + "\n  ".join(missing))
+print("\n".join(out))