{"record":{"id":"61a190f3f0eebd10","repo":"oraios/serena","slug":"languageserver-jl-installation-timed-out-please-i","errorCode":null,"errorMessage":"LanguageServer.jl installation timed out. Please install manually: julia -e 'using Pkg; Pkg.add(\"LanguageServer\")'","messagePattern":"LanguageServer\\.jl installation timed out\\. Please install manually: julia -e 'using Pkg; Pkg\\.add\\(\"LanguageServer\"\\)'","errorType":"exception","errorClass":"RuntimeError","httpStatus":null,"severity":"error","filePath":"src/solidlsp/language_servers/julia_server.py","lineNumber":112,"sourceCode":"            JuliaLanguageServer._install_language_server(julia_path)\n\n        return julia_path\n\n    @staticmethod\n    def _install_language_server(julia_path: str) -> None:\n        \"\"\"Install LanguageServer.jl package.\"\"\"\n        log.info(\"LanguageServer.jl not found. Installing... (this may take a minute)\")\n\n        install_cmd = [julia_path, \"-e\", 'using Pkg; Pkg.add(\"LanguageServer\")']\n\n        try:\n            result = subprocess_run(install_cmd, check=False, capture_output=True, text=True, timeout=300)  # 5 minutes for installation\n\n            if result.returncode == 0:\n                log.info(\"LanguageServer.jl installed successfully!\")\n            else:\n                raise RuntimeError(f\"Failed to install LanguageServer.jl: {result.stderr}\")\n        except subprocess.TimeoutExpired:\n            raise RuntimeError(\n                \"LanguageServer.jl installation timed out. Please install manually: julia -e 'using Pkg; Pkg.add(\\\"LanguageServer\\\")'\"\n            )\n\n    @override\n    def is_ignored_dirname(self, dirname: str) -> bool:\n        \"\"\"Define language-specific directories to ignore for Julia projects.\"\"\"\n        return super().is_ignored_dirname(dirname) or dirname in [\".julia\", \"build\", \"dist\"]\n\n    @override\n    def _supports_pull_diagnostics(self) -> bool:\n        # LanguageServer.jl raises an unhandled error on textDocument/diagnostic which crashes\n        # the server process. Force the published-diagnostics path instead.\n        return False\n\n    @override\n    def _get_published_diagnostics_wait_timeout(self, pull_diagnostics_failed: bool) -> float:\n        # LanguageServer.jl needs significant warm-up after init before it emits the first","sourceCodeStart":94,"sourceCodeEnd":130,"githubUrl":"https://github.com/oraios/serena/blob/7fcbca7e62555ec2287ddb2f083caee805848ea6/src/solidlsp/language_servers/julia_server.py#L94-L130","documentation":"Raised when the LanguageServer.jl installation subprocess exceeds the 300-second timeout, caught from `subprocess.TimeoutExpired` and re-raised with manual-install instructions. Serena deliberately fails fast instead of hanging language-server startup on a stuck download or Pkg resolve.","triggerScenarios":"`_install_language_server` calls `subprocess_run(install_cmd, ..., timeout=300)`; if the `julia` Pkg process takes longer than 5 minutes (slow network, huge dependency resolution, registry update), `subprocess.TimeoutExpired` is caught and this RuntimeError is raised.","commonSituations":"First install over a slow/unstable connection; registry server slowness; large transitive dependency resolution on cold depot; hung network mount; low-resource CI runners.","solutions":["Install manually ahead of time: `julia -e 'using Pkg; Pkg.add(\"LanguageServer\")'` so Serena's step becomes a no-op fast pass","Pre-warm the Julia depot before starting Serena (run Pkg.update/add once interactively)","Check network throughput/proxy; retry on a faster connection","Re-run setup — Pkg caches partial progress, so the second attempt is usually much faster","If hangs persist, inspect `julia` CPU/network state for a stuck process"],"exampleFix":"// before: fails on cold depot in CI\nRuntimeError: LanguageServer.jl installation timed out.\n// after: pre-cache dependencies in a CI step with a longer window\n- run: julia -e 'using Pkg; Pkg.add(\"LanguageServer\")'\n  timeout-minutes: 30\n# then start Serena; the install step completes instantly\n","handlingStrategy":"retry","validationCode":"import subprocess, time\nstart = time.time()\nsubprocess.run([\"julia\",\"-e\",\"using Pkg; Pkg.add('LanguageServer')\"], check=True)  # if this takes minutes interactively, expect Serena's 300s timeout","typeGuard":null,"tryCatchPattern":"try:\n    server = SolidLSP(JuliaConfig())\nexcept RuntimeError as e:\n    if \"timed out\" in str(e) and \"LanguageServer.jl\" in str(e):\n        time.sleep(2); retry_setup(max_attempts=3)  # Pkg caches progress; retries usually succeed\n    else:\n        raise\n","preventionTips":["Pre-warm the Julia depot (Pkg.add) in a CI step with a generous timeout","Avoid first-install on flaky/slow networks; run Pkg.update beforehand","Don't start the language server and immediately kill it mid-install; let retries complete","Monitor network throughput; ~5 min budget is what Serena allows"],"tags":["julia","installation","timeout","subprocess"],"backgroundTag":"subprocess-timeout","analyzedSha":"7fcbca7e62555ec2287ddb2f083caee805848ea6","analyzedAt":"2026-08-29T00:04:09.619Z","schemaVersion":2},"datasetVersion":"2026-08-29T02:17:18.158Z"}