alexreg · August 15, 2018 23:28 · Aug 15, 2018
diff --git a/cargo-update-binaries.py b/cargo-update-binaries.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+import io
+import json
+from packaging import version
+import re
+import subprocess
+
+def get_crate_info(crate):
+    with subprocess.Popen(["cargo", "info", "--json", crate], stdout = subprocess.PIPE) as proc:
+        return json.load(proc.stdout)
+
+with subprocess.Popen(["cargo", "install", "--list"], stdout = subprocess.PIPE) as proc:
+    re_crate = re.compile(r"(\w+) v([\d.]+):")
+    for line in io.TextIOWrapper(proc.stdout, encoding = "utf-8"):
+        line = line.rstrip()
+        match = re_crate.fullmatch(line)
+        if match:
+            crate = match[1]
+            installed_version = version.parse(match[2])
+
+            crate_info = get_crate_info(crate)
+            latest_version = version.parse(crate_info["crate"]["max_version"])
+
+            print("Found crate '{}' v{} (latest v{})".format(crate, installed_version, latest_version))
+
+            if latest_version > installed_version:
+                print("Updating crate '{}'...".format(crate))
+                subprocess.run(["cargo", "install", "--force", crate])