| packages/nixpkgs/perl540Packages.Env | Perl module that imports environment variables as scalars or arrays |
| packages/nixpkgs/perl540Packages.ENVUtil | Parse prefixed environment variables and dotnev (.env) files into Perl |
| packages/nixpkgs/perl540Packages.TestInDistDir | Test environment setup for development with IDE |
| packages/nixpkgs/perl540Packages.TermShellUI | Fully-featured shell-like command line environment |
| packages/nixpkgs/perl540Packages.NetAmazonEC2 | Perl interface to the Amazon Elastic Compute Cloud (EC2) environment |
| packages/nixpkgs/perl540Packages.HTTPRequestAsCGI | Set up a CGI environment from an HTTP::Request |
| packages/nixpkgs/perl540Packages.DevelDeprecationsEnvironmental | Framework for managing deprecations |