#1: katex-server si nyní sám volá npm install

Po poradě s kamarády pythonáři se to asi tak má dělat, i když je to trochu eh

.gitignore

@@ -14,3 +14,4 @@ public/
 **/*.egg-info
 build/
 dist/
+**/node_modules

pyproject.toml

@@ -1,10 +1,11 @@
 [build-system]
-requires = ["setuptools>=61.0"]
+requires = ["setuptools>=61.0","setuptools_scm[toml]>=6.2"]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "formatitko"
-version = "0.0.1"
+#version = "0.0.1"
+dynamic = ["version"]
 authors = [
   { name="Greenscreener	", email="gs@grsc.cz" },
   { name="Organizers of KSP", email="ksp-tech@ksp.mff.cuni.cz" }
@@ -24,3 +25,11 @@ classifiers = [
 
 [project.scripts]
 formatitko = "formatitko.formatitko:main"
+
+[tool.setuptools_scm]
+
+
+[tool.setuptools.packages.find]
+where = ["src"]
+exclude = ["src/formatitko/katex-server/node_modules"]
+

src/formatitko/katex.py

@@ -16,7 +16,19 @@ class KatexClient:
 		self._temp_dir = tempfile.TemporaryDirectory(prefix='formatitko')
 		self._socket_file = self._temp_dir.name + "/katex-socket"
 
-		self._server_process = subprocess.Popen(["node", os.path.dirname(os.path.realpath(__file__)) + "/katex-server/index.mjs", self._socket_file])
+		srcdir = os.path.dirname(os.path.realpath(__file__))
+
+		# Test if `node_modules` directory exists and if not, run `npm install`
+		if not os.path.isdir(srcdir + "/katex-server/node_modules"):
+			print("Installing node dependencies for the first time...")
+			try:
+				subprocess.run(["npm", "install"], cwd=srcdir+"/katex-server", check=True)
+			except subprocess.CalledProcessError as e:
+				if e.returncode == 127:
+					raise Exception("npm not found. Node.js is required to use KaTeX.")
+				else:
+					raise e
+		self._server_process = subprocess.Popen(["node", srcdir + "/katex-server/index.mjs", self._socket_file])
 
 		self._client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)