beiyanyunyi/nix-shell
skills/nix-shell/SKILL.md
A skill that describing how to use nix shell and nix run to create a temporary environment. Use when you want to run a command that isn't in your PATH.
tools
Updated Jun 17, 2026
$ install --global
skillsauthnpx skillsauth add beiyanyunyi/skills nix-shellInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Jun 17, 2026, 3:20 AM295.6s1 file scanned
SKILL.md
- name:
- nix-shell
- description:
- A skill that describing how to use nix shell and nix run to create a temporary environment. Use when you want to run a command that isn't in your PATH.
nix-shell
When you want to execute a command but it's not in your PATH, you can use nix shell or nix run to create a temporary environment. nix shell will create a new shell with the specified packages available, while nix run will run a command directly without a shell.
Before using nix shell or nix run, you may want to figure out which packages you need for your command. User will have nix in their system with package index available. You can use nix-locate to search for packages. For example:
nix-locate /bin/w | rg "/bin/w\$" # to find the package that provides /bin/w
After finding the package, you can use nix shell to create a temporary environment with that package available, or nix run to run the command directly. For example, to use ffmpeg:
# using nix shell
nix shell nixpkgs#ffmpeg
ffmpeg <params>
# using nix run
nix run nixpkgs#ffmpeg <params>
When to use
When you want to run a command that isn't in your PATH.
Instructions
-
(optional) Find the package using
nix-locate. -
Use
nix shellto create a temporary environment with that package available, ornix runto run the command directly. -
If the package isn't cached, nix will download it from the internet. In this case, you may get nix's output before the actual command starts, like:
this path will be fetched (0.68 MiB download, 1.94 MiB unpacked): /nix/store/hzyllvnksfjiy4bh3j7jd70j0qr2nq9z-eza-0.23.4 copying path '/nix/store/hzyllvnksfjiy4bh3j7jd70j0qr2nq9z-eza-0.23.4' from 'https://cache.nixos.org'...you should ignore nix's output and wait for the actual command to start.
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