A Minimal Lambda Node.js Runtime Built With Nix!

This repository contains the source code needed to build the Lambda Node.js runtime that I've described on my blog.

To build the smallest image possible, that is described and tested at the end of the article, you can use the default flake output:

nix build 

To load the image into docker, use the following command:

docker load -i $(nix build --print-out-paths)

You can also build any other intermediate step that is described in the blog post. Use nix flake show to see all available outputs. The naming uses the following schema:

[node]-[intl]-[locales]-[rie]

• node is either slim or full and controls whether the full or slim nixpkgs node.js package is used.
• intl is either intl or no-intl and controls whether node is compiled with Intl support.
• locales is either locales or no-locales and controls whether the locales are stripped from the glibc
• rie is either rie or no-rie and controls whether the Lambda Runtime Interface Emulator is included to allow for local execution of the image.

$ nix flake show

├───formatter
│   ├───[omitted]
│   └───x86_64-linux: package 'alejandra-3.0.0'
└───packages
    ├───[omitted]
    └───x86_64-linux
        ├───default: package 'docker-image-node_slim_no-intl_no-locales_no-rie.tar.gz'
        ├───full_intl_locales_no-rie: package 'docker-image-node_full_intl_locales_no-rie.tar.gz'
        ├───full_intl_locales_rie: package 'docker-image-node_full_intl_locales_rie.tar.gz'
        ├───full_intl_no-locales_no-rie: package 'docker-image-node_full_intl_no-locales_no-rie.tar.gz'
        ├───full_intl_no-locales_rie: package 'docker-image-node_full_intl_no-locales_rie.tar.gz'
        ├───full_no-intl_locales_no-rie: package 'docker-image-node_full_no-intl_locales_no-rie.tar.gz'
        ├───full_no-intl_locales_rie: package 'docker-image-node_full_no-intl_locales_rie.tar.gz'
        ├───full_no-intl_no-locales_no-rie: package 'docker-image-node_full_no-intl_no-locales_no-rie.tar.gz'
        ├───full_no-intl_no-locales_rie: package 'docker-image-node_full_no-intl_no-locales_rie.tar.gz'
        ├───minimal: package 'docker-image-node_slim_no-intl_no-locales_no-rie.tar.gz'
        ├───slim_intl_locales_no-rie: package 'docker-image-node_slim_intl_locales_no-rie.tar.gz'
        ├───slim_intl_locales_rie: package 'docker-image-node_slim_intl_locales_rie.tar.gz'
        ├───slim_intl_no-locales_no-rie: package 'docker-image-node_slim_intl_no-locales_no-rie.tar.gz'
        ├───slim_intl_no-locales_rie: package 'docker-image-node_slim_intl_no-locales_rie.tar.gz'
        ├───slim_no-intl_locales_no-rie: package 'docker-image-node_slim_no-intl_locales_no-rie.tar.gz'
        ├───slim_no-intl_locales_rie: package 'docker-image-node_slim_no-intl_locales_rie.tar.gz'
        ├───slim_no-intl_no-locales_no-rie: package 'docker-image-node_slim_no-intl_no-locales_no-rie.tar.gz'
        └───slim_no-intl_no-locales_rie: package 'docker-image-node_slim_no-intl_no-locales_rie.tar.gz'

For example, use nix build .#slim_intl_locales_rie to build the image using the slim Node.js package, with Intl support, locales and local execution support.