{
  "checker": {
    "claims": [
      {
        "claim": "CCCL is header-only and the convenience installer copies its headers into the prefix",
        "command": "bash ci/install_cccl.sh <guest-path>",
        "evidence": "Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: /tmp/coldpas",
        "expected": "cub.cuh header installed under the prefix",
        "input": "ci/install_cccl.sh <guest-path>",
        "kind": "claim",
        "outcome": "Real input produced the expected result: Installing: <guest-path>",
        "returncode": 0,
        "source": "Everything in CCCL is header-only.",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "yes"
      },
      {
        "claim": "A convenience script installs CCCL to a given directory",
        "command": "bash ci/install_cccl.sh <guest-path>",
        "evidence": "Install CCCL - Success - Duration: 3s ==================\n\u001b[0m\n",
        "expected": "install finishes with success banner",
        "input": "ci/install_cccl.sh <guest-path>",
        "kind": "claim",
        "outcome": "Real input produced the expected result: Install CCCL - Success",
        "returncode": 0,
        "source": "ci/install_cccl.sh /usr/local",
        "source_checked": true,
        "source_file": "README.md",
        "verdict": "yes"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "CCCL is a header-only C++ library with a one-shot CMake install (ci/install_cccl.sh / cmake --preset install). Inspected README.md and the entry points: no scheduler, cron, loop, webhook, --once or --now trigger in the product.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "CCCL is a header-only C++ library with a one-shot CMake install (ci/install_cccl.sh / cmake --preset install). Inspected README.md and the entry points: no scheduler, cron, loop, webhook, --once or --now trigger in the product.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "argv": [
        "bash",
        "ci/install_cccl.sh",
        "<guest-path>"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "g: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n-- Installing: <guest-path>\n[excerpt truncated]",
      "working": true
    },
    "evidence_strength": "readme_checked",
    "example_checks": [
      {
        "claim": "Installation example project (examples/basic) builds CCCL demo",
        "command": "",
        "deferred": false,
        "evidence": "Not runnable in this VM: examples/basic declares project(CCCLDemo CUDA), needs an NVIDIA nvcc (none installed, no /usr/local/cuda, no GPU) and fetches CCCL from GitHub via CPM. Ran the README installer ci/install_cccl.sh instead, which is the documented install path.",
        "expected": "documented command completes successfully",
        "input": "",
        "kind": "example",
        "outcome": "Not runnable in this VM: examples/basic declares project(CCCLDemo CUDA), needs an NVIDIA nvcc (none installed, no /usr/local/cuda, no GPU) and fetches CCCL from GitHub via CPM. Ran the README installer ci/install_cccl.sh instead, which is the documented install path.",
        "source": "examples/basic/README.md",
        "verdict": "blocked"
      }
    ],
    "status": "PASS"
  },
  "deviations": [
    "Installed cmake via apt because the VM had no cmake; the README's install section assumes cmake is present.",
    "Used ci/install_cccl.sh (the README's documented convenience script, which runs cmake --preset install) rather than the in-source 'cmake . && make install' form, to keep build files out of the source tree. Both are documented.",
    "examples/basic (CPM-based CUDA demo) not run: needs nvcc and network fetch from GitHub; no CUDA toolkit or GPU in the VM. Recorded as a blocked example.",
    "README's nvcc compile example not run for the same reason."
  ],
  "fault_owner": null,
  "main_blocker": null,
  "operation": "Install CCCL headers and CMake package files with the README's convenience installer: bash ci/install_cccl.sh <prefix>",
  "operation_scope": "Header-only library install on Ubuntu 24.04 (x86-64 WSL2 guest, root-capable user with sudo). Needs cmake >= 3.21 and make/g++. Not covered: compiling CUDA code with nvcc (no CUDA toolkit or GPU in this VM), so GPU builds and the examples/basic CPM project were not run.",
  "outcome": "working",
  "plain_failure": null,
  "steps": [
    "git init / fetch of pinned commit: not needed, source snapshot already present in <guest-path>",
    "sudo apt-get -o DPkg::Lock::Timeout=300 update && sudo apt-get -o DPkg::Lock::Timeout=300 install -y cmake  (cmake 3.28.3 installed)",
    "bash ci/install_cccl.sh <guest-path>  (README 'A convenience script is also provided'; exit 0, installed include/, lib/cmake/)",
    "bash ci/install_cccl.sh <guest-path>  (replayed probe: 'Install CCCL - Success')"
  ],
  "stuck_step": null,
  "suggested_fix": "None for the install path. To test GPU usage, run the VM with a CUDA toolkit and an NVIDIA GPU, then compile the README example with nvcc."
}