Try to fix makelock discovery

.github/workflows/gh-pages.yml

@@ -79,7 +79,9 @@ jobs:
       - name: Extract the PyPi-enabled pyodide-lock.json
         run: |
           cp files/requirements.txt pyodide/my-requirements.txt
-          pyodide/run_docker --non-interactive node tools/makelock.mjs my-requirements.txt dist/pypi-pyodide-lock.json
+          cp tools/makelock.mjs pyodide/makelock.mjs
+          pyodide/run_docker --non-interactive node makelock.mjs my-requirements.txt dist/pypi-pyodide-lock.json
+          rm pyodide/makelock.mjs
           rm pyodide/my-requirements.txt
       - name: Clean up the pyodide build
         run: |

tools/makelock.mjs

@@ -0,0 +1,32 @@
+import { readFileSync, writeFileSync } from "fs";
+import { argv } from "process";
+
+import { loadPyodide } from "dist/pyodide.mjs";
+
+const [_node_path, _script_path, requirements_path, new_lockfile_path] = argv;
+
+const requirements = readFileSync(requirements_path, { encoding: 'utf8' });
+
+const py = await loadPyodide({ packages: ["micropip"] });
+
+await py.runPythonAsync(`
+import micropip
+
+micropip.set_index_urls([
+    # TODO: use a locally-hosted index with the fresh wheels
+    "https://lab.climet.eu/main/pypa/simple/{package_name}/",
+    "https://pypi.org/pypi/{package_name}/json",
+])
+
+await micropip.install([
+    r for r in """${requirements}""".splitlines()
+    if len(r) > 0 and not r.startswith('#')
+], verbose=True)
+
+with open("/pyodide-lock.json", "w") as f:
+    f.write(micropip.freeze())
+`);
+
+const lock = py.FS.readFile("/pyodide-lock.json", { encoding: 'utf8' });
+
+writeFileSync(new_lockfile_path, lock);