Name

       nix store prefetch-file - download a file into the Nix store

Synopsis

       nix store prefetch-file [option…] url

Examples

       • Download a file to the Nix store:

       # nix store prefetch-file https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz
       Downloaded 'https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz' to
       '/nix/store/vbdbi42hgnc4h7pyqzp6h2yf77kw93aw-source' (hash
       'sha256-qKheVd5D0BervxMDbt+1hnTKE2aRWC8XCAwc0SeHt6s=').

       • Download a file and get the SHA-512 hash:

       # nix store prefetch-file --json --hash-type sha512 \
         https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz \
       | jq -r .hash
       sha512-6XJxfym0TNH9knxeH4ZOvns6wElFy3uahunl2hJgovACCMEMXSy42s69zWVyGJALXTI+86tpDJGlIcAySEKBbA==

Description

       This  command  downloads  the file url to the Nix store. It prints out the resulting store
       path and the cryptographic hash of the contents of the file.

       The name component of the store path defaults to the last component of url, but  this  can
       be overridden using --name.

Options

       • --executable
         Make the resulting file executable. Note that this causes the resulting hash to be a NAR
         hash rather than a flat file hash.

       • --expected-hash hash
         The expected hash of the file.

       • --hash-type hash-algo
         hash algorithm (‘md5’, ‘sha1’, ‘sha256’, or ‘sha512’)

       • --json
         Produce output in JSON format, suitable for consumption by another program.

       • --name name
         Override the name component of the resulting store path. It defaults to the base name of
         url.

                                                                      nix3-store-prefetch-file(1)