{

   "niv": {
     "branch": "master",
     "description": "Easy dependency management for Nix projects",
     "homepage": "https://github.com/nmattia/niv",
     "owner": "nmattia",
     "repo": "niv",
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     "sha256": "0wpnk1n4vjyqwjjrm6dvkyh7xr7983rszfhfcg31v106qhfnh41c",
     "type": "tarball",
     "url": "https://github.com/nmattia/niv/archive/0ebb80e003c26d5388a9b74645fbdcfca3bdd0ef.tar.gz",
     "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
   },
   "nixpkgs": {
     "branch": "release-23.05",
     "description": "Nix Packages collection",
     "homepage": "",
     "owner": "NixOS",
     "repo": "nixpkgs",
     "rev": "237c40f707fc57bee66e1b8fe53cc74b76a2f864",
     "sha256": "0xwvbagj6qg5blk63a0gskakwjzrrk7n9j4brm4i3y4d24ff2xb5",
     "type": "tarball",
     "url": "https://github.com/NixOS/nixpkgs/archive/237c40f707fc57bee66e1b8fe53cc74b76a2f864.tar.gz",
     "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz",
     "version": "21.11"
   }

 }