# 使用 Homebrew, apk, MacPorts, Nix, pacman, scoop 安装 eva

查看 eva 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:eva
```

其他安装命令:

### macOS

- Homebrew (100%):

```sh
brew install eva
```

  证据: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install eva
```

  证据: MacPorts ports tree: math/eva/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

### Linux

- apk (92%):

```sh
sudo apk add eva
```

  证据: Alpine Linux edge package indexes: eva from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz

- Nix (92%):

```sh
nix profile install nixpkgs#eva
```

  证据: nixpkgs package indexes: pkgs/by-name/ev/eva/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

- pacman (92%):

```sh
sudo pacman -S eva
```

  证据: Arch Linux sync databases: eva from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

### Windows

- Scoop (92%):

```sh
scoop install main/eva
```

  证据: Scoop official bucket manifest trees: bucket/eva.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1

## 软件包事实

- **软件包键:** brew:eva
- **软件包管理器:** Homebrew
- **版本:** 0.3.1
- **来源摘要:** Calculator REPL, similar to bc(1)
- **主页:** <https://github.com/oppiliappan/eva/>
- **仓库:** <https://github.com/oppiliappan/eva>
- **已生成:** 2026-08-03T19:37:03+00:00

## 可执行文件

- eva (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: 0.3.1
## 项目历史与用法

eva is a Rust calculator REPL and command-mode calculator similar to `bc(1)`.

### 项目历史

The official repository was created in 2019. Its README describes eva as a simple calculator REPL with syntax highlighting and persistent history, and Cargo metadata classifies it under command-line, science, and parser categories.

### 采用历史

The official README documents installation through Homebrew, crates.io, and manual source builds. The input package facts list packages for Homebrew, Alpine, MacPorts, Nix, Arch/Pacman, and Scoop.

### 使用方式

eva can be launched as an interactive REPL or passed an expression argument for command mode. It supports arithmetic operators, constants, trigonometric and logarithmic functions, output radix and precision options, previous-answer reuse, syntax highlighting, and persistent REPL history.

### 为什么软件包爱好者会关心

eva is a small terminal calculator in the lineage of `bc`, interesting to package maintainers because it is a Rust CLI distributed through crates.io and several system package managers while keeping a focused single-binary interface.

### 时间线

- 2019: Official GitHub repository created.
- 2025: Repository metadata shows continued activity.

### Related projects

- bc
- Rust
- crates.io
- Homebrew

### 来源

- GitHub API for oppiliappan/eva repository metadata.
- Official eva Cargo.toml.
- Official eva README.
- Official eva src/main.rs.
- source_facts.package-manager


## 安全说明

generalized runtime or code generation signal.

- **Geiger 风险:** yellow / 中
- generalized runtime or code generation signal

## 其他软件包管理器记录

- Nix - eva: normalized package name match | nixpkgs package indexes: pkgs/by-name/ev/eva/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- apk - eva - 0.3.1-r2: normalized package name match | Alpine Linux edge package indexes: eva from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | Calculator REPL, similar to bc(1) | https://github.com/nerdypepper/eva
- pacman - eva - 0.3.1-3: normalized package name match | Arch Linux sync databases: eva from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | simple calculator REPL, similar to bc(1) | https://github.com/nerdypepper/eva
- MacPorts - eva: normalized package name match | MacPorts ports tree: math/eva/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1
- Scoop - main/eva: normalized package name match | Scoop official bucket manifest trees: bucket/eva.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1


## Combined YAML source

View the package source record on GitHub. [combined/eva.yml](https://github.com/mxcl/pkgdb/blob/main/combined/eva.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