# eva を Homebrew, apk, MacPorts, Nix, pacman, scoop でインストール

eva のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。

## インストール

```sh
sudo av install brew:eva
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install eva
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install eva
```

  証拠: 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
```

  証拠: 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
```

  証拠: 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
```

  証拠: 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
```

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

## パッケージ情報

- **パッケージキー:** brew:eva
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.3.1
- **ソース概要:** Calculator REPL, similar to bc(1)
- **ホームページ:** <https://github.com/oppiliappan/eva/>
- **リポジトリ:** <https://github.com/oppiliappan/eva>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- eva (エイリアス)

## インストール挙動

- Bottle: 利用不可

## バージョンと鮮度

- ページ生成日: 2026-08-03
- マネージャ版: 0.3.1
## プロジェクトの歴史と使われ方

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

### プロジェクトの歴史

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.

### 採用の歴史

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.

### 使われ方

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.

### パッケージ好きにとっての重要性

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.

### タイムライン

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

### Related projects

- bc
- Rust
- crates.io
- Homebrew

### ソース

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


## セキュリティノート

generalized runtime or code generation signal.

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

## 他のパッケージマネージャ記録

- 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)


## ソース

- 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