{
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        "description": "Easy dependency management for Nix projects",
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        "type": "tarball",
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        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "nixpkgs": {
        "branch": "release-21.11",
        "description": "Nix Packages collection",
        "homepage": "",
        "owner": "NixOS",
        "repo": "nixpkgs",
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        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "rust-overlay": {
        "branch": "master",
        "description": "Pure and reproducible nix overlay of binary distributed rust toolchains",
        "homepage": "",
        "owner": "oxalica",
        "repo": "rust-overlay",
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}