# Install eva with Homebrew, apk, MacPorts, Nix, pacman, scoop

Calculator REPL, similar to bc(1). Version 0.3.1 via Homebrew; verified from local package data. Also installable with nix: nix profile install nixpkgs#eva.

## Install

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

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install eva
```

  Evidence: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install eva
```

  Evidence: 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
```

  Evidence: 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
```

  Evidence: 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
```

  Evidence: 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
```

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

## Package facts

- **Package key:** brew:eva
- **Package manager:** Homebrew
- **Package manager page:** <https://formulae.brew.sh/formula/eva>
- **Version:** 0.3.1
- **Source summary:** Calculator REPL, similar to bc(1)
- **Homepage:** <https://github.com/oppiliappan/eva/>
- **Repository:** <https://github.com/oppiliappan/eva>
- **Upstream docs:** <https://github.com/oppiliappan/eva/>
- **License:** MIT
- **Source archive:** <https://github.com/oppiliappan/eva/archive/refs/tags/v0.3.1.tar.gz>
- **Generated:** 2026-08-04T22:13:35+00:00

## Executables

- eva (cli)
- eva (alias)

## Build dependencies

- rust

## Install behavior

- Post-install hook: not defined
- Bottle: available on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura

## Freshness

- Page generated: 2026-08-04
- Package-manager version: 0.3.1
- Local data: ok
- Upstream repository: https://github.com/oppiliappan/eva
- Upstream latest detected: v0.3.1 (current)
- info: No package-manager update timestamp was available.
## Project history and usage

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

### Project history

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.

### Adoption history

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.

### How it is used

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.

### Why package nerds care

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.

### Timeline

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

### Related projects

- bc
- Rust
- crates.io
- Homebrew

### Sources

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


## Security Notes

generalized runtime or code generation signal.

- **Geiger risk:** yellow / medium
- generalized runtime or code generation signal

## Source Database Details

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** eva
- **Version Scheme:** 0
- **Revision:** 0
- **Head Version:** HEAD
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** head, stable

## Other Package-Manager Records

- 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


## Related links

- [Source-control packages](https://pkg.so/source-control-tools/) - Belongs to a source-control command family.
- [Secret-risk packages](https://pkg.so/secret-risk-packages/) - Has protected-tool coverage, approval-gate, or non-low Geiger security signals.
- [Terminal utility packages](https://pkg.so/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Language runtime packages](https://pkg.so/language-runtime-packages/) - Matched language runtime, compiler, or interpreter metadata.
- [rust](https://pkg.so/brew/rust/) - Build dependency declared by Homebrew.
- [libqalculate](https://pkg.so/brew/libqalculate/) - Shares pkgdb curated category or tags: calculator, cli, math, science.
- [rink](https://pkg.so/brew/rink/) - Shares pkgdb curated category or tags: calculator, cli, rust, science.
- [spigot](https://pkg.so/brew/spigot/) - Shares pkgdb curated category or tags: calculator, cli, math, science.
- [calc](https://pkg.so/brew/calc/) - Shares pkgdb curated category or tags: calculator, cli, science.
- [gnu-units](https://pkg.so/brew/gnu-units/) - Shares pkgdb curated category or tags: calculator, cli, science.
- [numbat](https://pkg.so/brew/numbat/) - Shares pkgdb curated category or tags: calculator, cli, science.
- [astroterm](https://pkg.so/brew/astroterm/) - Shares pkgdb curated category or tags: cli, science, terminal.
- [ginac](https://pkg.so/brew/ginac/) - Shares pkgdb curated category or tags: cli, math, science.
- [satellite-tracker](https://pkg.so/brew/satellite-tracker/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, rust, science, terminal.
- [chopper](https://pkg.so/brew/chopper/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, rust, science.

## Combined YAML source

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


## Sources

- pkg.so package database
- Geiger risk classifier
- package-page enrichment
- curated package history
- package version freshness
- pkgdb category and tag curation
- package relationship graph
- external package-manager database matches
- cross-ecosystem install command graph