install

Additional install commands

macOS

Homebrewverified · 100%

brew install eva

local Homebrew formula metadata

MacPortsverified · 94%

sudo port install eva

MacPorts ports tree · math/eva/Portfile · source: api.github.com

Linux

Alpine Linux apkverified · 92%

sudo apk add eva

Alpine Linux edge package indexes · eva · source: dl-cdn.alpinelinux.org

Nixverified · 92%

nix profile install nixpkgs#eva

nixpkgs package indexes · pkgs/by-name/ev/eva/package.nix · source: api.github.com

Arch Linux pacmanverified · 92%

sudo pacman -S eva

Arch Linux sync databases · eva · source: geo.mirror.pkgbuild.com

Windows

Scoopverified · 92%

scoop install main/eva

Scoop official bucket manifest trees · bucket/eva.json · source: api.github.com

overview

Package summary

Calculator REPL, similar to bc(1)

Project links

Commands and aliases

eva

history

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 posture

Risk level: yellow

generalized runtime or code generation signal.

Risk classifier

yellow risk · medium confidence · runtime

Why

generalized runtime or code generation signal

Signals

text:repl

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 13 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`eva`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-08-04

manager version0.3.1

manager updated

local dataok

upstreamcurrent

latest detectedv0.3.1

https://github.com/oppiliappan/eva

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:eva
Version	0.3.1
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/eva
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
Build dependencies	rust
Bottle	available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

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

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

eva

nix profile install nixpkgs#eva

normalized package name match
Matched by: Eva

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

apk95%

eva 0.3.1-r2

Calculator REPL, similar to bc(1)

https://github.com/nerdypepper/eva

sudo apk add eva

License: MIT
Architecture: x86_64
Source Package: eva
1 dependencies
1 provides
normalized package name match
Matched by: Eva

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

pacman95%

eva 0.3.1-3

simple calculator REPL, similar to bc(1)

https://github.com/nerdypepper/eva

sudo pacman -S eva

License: MIT
Architecture: x86_64
2 dependencies
normalized package name match
Matched by: Eva

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

MacPorts95%

eva

sudo port install eva

normalized package name match
Matched by: Eva

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

Scoop95%

main/eva

scoop install main/eva

normalized package name match
Matched by: Eva

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

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/eva.yml

Used sources

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

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