# 使用 Homebrew, dnf, Nix, apt 安装 cctz 查看 cctz 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。 ## 安装 ```sh sudo av install brew:cctz ``` 其他安装命令: ### macOS - Homebrew (100%): ```sh brew install cctz ``` 证据: local Homebrew formula metadata ### Linux - dnf (92%): ```sh sudo dnf install cctz ``` 证据: Fedora Rawhide package metadata: cctz from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst - Nix (92%): ```sh nix profile install nixpkgs#cctz ``` 证据: nixpkgs package indexes: pkgs/by-name/cc/cctz/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Debian apt (92%): ```sh sudo apt install libcctz-dev ``` 证据: Debian stable package indexes: libcctz-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz ## 软件包事实 - **软件包键:** brew:cctz - **软件包管理器:** Homebrew - **版本:** 2.5 - **来源摘要:** C++ library for translating between absolute and civil times - **主页:** - **仓库:** - **已生成:** 2026-08-03T19:37:03+00:00 ## 可执行文件 - time_tool (别名) ## 安装行为 - Bottle: 不可用 ## 版本和新鲜度 - 页面生成时间: 2026-08-03 - 管理器版本: 2.5 ## 项目历史与用法 CCTZ is Google's C++ date, civil-time, and time-zone library for converting between absolute time and human civil time using IANA time-zone data. It is packaged both as a library and, in Homebrew, with the time_tool example executable. ### 项目历史 The official repository was created in 2015. The README says CCTZ contains a Civil-Time Library and a Time-Zone Library that cooperate with C++ , giving programmers tools for date, time, and time-zone work. CCTZ had a v1.0 release in March 2016 and a v2.0 release in April 2016, followed by v2.1 in 2017, v2.2 in 2018, v2.3 in 2019, v2.4 in 2024, and v2.5 in 2025. ### 采用历史 The README documents Bazel as the preferred build system while also supporting Make and CMake. The input package facts list Homebrew, Debian/Ubuntu libcctz-dev, Fedora/DNF, and Nix packages, showing adoption as a reusable C++ library rather than only as an application. ### 使用方式 CCTZ is used by C++ programs that need correct civil-date arithmetic and conversion between time zones and absolute time points. The README points users to cctz/civil_time.h, cctz/time_zone.h, examples, Bazel, CMake, and system-installed IANA zoneinfo data. ### 为什么软件包爱好者会关心 CCTZ is package-nerd significant because time-zone handling is notoriously edge-case heavy, and this library packages a focused C++ solution around IANA data before broad standard-library time-zone support was common in deployed toolchains. ### 时间线 - 2015: Official GitHub repository created. - 2016: v1.0 and v2.0 releases published. - 2019: v2.3 release published. - 2024: v2.4 release published. - 2025: v2.5 release published. ### Related projects - The README references C++ , the IANA time-zone database, Bazel, GoogleTest, and CMake. - The README also links older ISO C++ proposals for standardizing civil-time and time-zone libraries. ### 来源 - - - - ## 安全说明 library-like package without higher-risk signals. - **Geiger 风险:** 绿色 / 低 - library-like package without higher-risk signals ## 其他软件包管理器记录 - Debian apt - libcctz-dev - 2.4+dfsg1-2: normalized package name match | Debian stable package indexes: libcctz-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Library for computing dates, times and time zones, development files | https://github.com/google/cctz - Debian apt - libcctz-doc - 2.4+dfsg1-2: normalized package name match | Debian stable package indexes: libcctz-doc from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Library for computing dates, times and time zones, documentation | https://github.com/google/cctz - Debian apt - libcctz2.4 - 2.4+dfsg1-2: normalized package name match | Debian stable package indexes: libcctz2.4 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Library for computing dates, times and time zones, shared library | https://github.com/google/cctz - Nix - cctz: normalized package name match | nixpkgs package indexes: pkgs/by-name/cc/cctz/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - libcctz-dev - 2.3+dfsg1-5build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libcctz-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Library for computing dates, times and time zones, development files | https://github.com/google/cctz - Ubuntu apt - libcctz-doc - 2.3+dfsg1-5build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libcctz-doc from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Library for computing dates, times and time zones, documentation | https://github.com/google/cctz - Ubuntu apt - libcctz2 - 2.3+dfsg1-5build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libcctz2 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Library for computing dates, times and time zones, shared library | https://github.com/google/cctz - dnf - cctz - 2.5-4.fc45: normalized package name match | Fedora Rawhide package metadata: cctz from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Translating between absolute and civil times using time zone rules | https://github.com/google/cctz - dnf - cctz-devel - 2.5-4.fc45: normalized package name match | Fedora Rawhide package metadata: cctz-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Translating between absolute and civil times using time zone rules | https://github.com/google/cctz ## Combined YAML source View the package source record on GitHub. [combined/cctz.yml](https://github.com/mxcl/pkgdb/blob/main/combined/cctz.yml) ## 来源 - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph