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)