Fails to fetch cargo dependency using a git repo, maybe because of master vs main

[tv42]

Nushell (https://github.com/nushell/nushell) at commit db9b88089e9f8ac69ce1a2b0e9f3aff2b892bae5 depends on an unreleased library version, and imports it from git:

https://github.com/nushell/nushell/blob/db9b88089e9f8ac69ce1a2b0e9f3aff2b892bae5/Cargo.toml#L55
https://github.com/nushell/nushell/blob/db9b88089e9f8ac69ce1a2b0e9f3aff2b892bae5/Cargo.lock#L3857

Naersk fails to fetch the sources for that:

$ nix build
fetching Git repository 'https://github.com/nushell/reedline.git'fatal: couldn't find remote ref refs/heads/master
error: program 'git' failed with exit code 128
(use '--show-trace' to show detailed location information)

This might be because the repository uses main not master? I would have expected naersk to cope with that by now, though.

Setting gitAllRefs makes the build go further, so I assume that worked around this particular problem. However, the documentation for gitAllRefs says

Whether to fetch all refs while fetching Git dependencies. Useful if the wanted revision isn't in the default branch. Requires Nix 2.4+. Default: false

which does not apply here; the relevant reedline commit (59f7144d721cd573f629048e753f163f2652334f) is in reedline's default branch, as seen at https://github.com/nushell/reedline/commits/main -- the default branch is just named main not master.

nix build --show-trace

fatal: couldn't find remote ref refs/heads/master
error: program 'git' failed with exit code 128

       … while fetching the input 'git+https://github.com/nushell/reedline.git?rev=59f7144d721cd573f629048e753f163f2652334f'

       … while evaluating the attribute 'buildCommand' of the derivation 'git-deps'

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/pkgs/stdenv/generic/make-derivation.nix:278:7:

          277|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          278|       name =
             |       ^
          279|         let

       … while evaluating the attribute 'paths' of the derivation 'crates-io'

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/pkgs/stdenv/generic/make-derivation.nix:278:7:

          277|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          278|       name =
             |       ^
          279|         let

       … while evaluating 'outputVal'

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:41:15:

           40|
           41|   outputVal = v:
             |               ^
           42|     let

       … from call site

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:39:9:

           38|           "{ ${valsStr} }" else
           39|         outputVal v;
             |         ^
           40|

       … while evaluating 'outputValInner'

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:28:20:

           27|
           28|   outputValInner = v:
             |                    ^
           29|     let

       … from call site

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:69:42:

           68|           vals = mapAttrsToList
           69|             (k': v': "${quoteKey k'} = ${outputValInner v'}") v;
             |                                          ^
           70|           valsStr = concatStringsSep ", " vals;

       … while evaluating anonymous lambda

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:69:18:

           68|           vals = mapAttrsToList
           69|             (k': v': "${quoteKey k'} = ${outputValInner v'}") v;
             |                  ^
           70|           valsStr = concatStringsSep ", " vals;

       … from call site

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/lib/attrsets.nix:356:16:

          355|   mapAttrsToList = f: attrs:
          356|     map (name: f name attrs.${name}) (attrNames attrs);
             |                ^
          357|

       … while evaluating anonymous lambda

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/lib/attrsets.nix:356:10:

          355|   mapAttrsToList = f: attrs:
          356|     map (name: f name attrs.${name}) (attrNames attrs);
             |          ^
          357|

       … from call site

       … while evaluating anonymous lambda

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:133:10:

          132|       concatMapStringsSep "\n"
          133|         (kv: concatStringsSep "\n" (outputKeyVal kv.k kv.v))
             |          ^
          134|         (

       … from call site

       … while evaluating 'concatMapStringsSep'

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/lib/strings.nix:111:5:

          110|     # List of input strings
          111|     list: concatStringsSep sep (map f list);
             |     ^
          112|

       … from call site

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:132:7:

          131|     in
          132|       concatMapStringsSep "\n"
             |       ^
          133|         (kv: concatStringsSep "\n" (outputKeyVal kv.k kv.v))

       … while evaluating 'toTOML'

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/builtins/to-toml.nix:119:12:

          118|
          119|   toTOML = attrs:
             |            ^
          120|     assert (typeOf attrs == "set");

       … from call site

       at /nix/store/6p8svd0kaprcjl9jxzpwzaz8s7pqrgi1-source/build.nix:198:19:

          197|     # and git dependencies.
          198|     cargoconfig = builtinz.toTOML {
             |                   ^
          199|       source = {

       … while evaluating the attribute 'cargoconfig' of the derivation 'nu-deps-0.65.1'

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/pkgs/stdenv/generic/make-derivation.nix:278:7:

          277|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          278|       name =
             |       ^
          279|         let

       … while evaluating the attribute 'builtDependencies' of the derivation 'nu-0.65.1'

       at /nix/store/d0xl1nq63szk40j5s70qwp3p0zgx4nqb-source/pkgs/stdenv/generic/make-derivation.nix:278:7:

          277|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          278|       name =
             |       ^
          279|         let

reproducing flake.nix

{
  inputs = {
    nixpkgs.url = github:nixos/nixpkgs/nixos-22.05;
    flake-utils.url = github:numtide/flake-utils;
    naersk = {
      url = github:nix-community/naersk;
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nushell = {
      url = github:nushell/nushell;
      flake = false;
    };
  };

  outputs = { self, nixpkgs, flake-utils, naersk, nushell, ... }@inputs:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
        };
        naersk-lib = naersk.lib.${system};
      in
      rec {
        packages.default = naersk-lib.buildPackage {
          pname = "nushell";
          src = nushell;
          buildInputs = with pkgs; [
	    pkg-config
	    openssl
          ];
        };
      });
}

reproducing flake.lock

{
  "nodes": {
    "flake-utils": {
      "locked": {
        "lastModified": 1656928814,
        "narHash": "sha256-RIFfgBuKz6Hp89yRr7+NR5tzIAbn52h8vT6vXkYjZoM=",
        "owner": "numtide",
        "repo": "flake-utils",
        "rev": "7e2a3b3dfd9af950a856d66b0a7d01e3c18aa249",
        "type": "github"
      },
      "original": {
        "owner": "numtide",
        "repo": "flake-utils",
        "type": "github"
      }
    },
    "naersk": {
      "inputs": {
        "nixpkgs": [
          "nixpkgs"
        ]
      },
      "locked": {
        "lastModified": 1655042882,
        "narHash": "sha256-9BX8Fuez5YJlN7cdPO63InoyBy7dm3VlJkkmTt6fS1A=",
        "owner": "nix-community",
        "repo": "naersk",
        "rev": "cddffb5aa211f50c4b8750adbec0bbbdfb26bb9f",
        "type": "github"
      },
      "original": {
        "owner": "nix-community",
        "repo": "naersk",
        "type": "github"
      }
    },
    "nixpkgs": {
      "locked": {
        "lastModified": 1658237535,
        "narHash": "sha256-z3Ff9oSXEPSZMfXdM+r29oJxtyKUnlUOc18U9E6Q48g=",
        "owner": "nixos",
        "repo": "nixpkgs",
        "rev": "e732e1fdbf79bec59f7ade4a3675b091b4a9f6d6",
        "type": "github"
      },
      "original": {
        "owner": "nixos",
        "ref": "nixos-22.05",
        "repo": "nixpkgs",
        "type": "github"
      }
    },
    "nushell": {
      "flake": false,
      "locked": {
        "lastModified": 1658329773,
        "narHash": "sha256-Y38RK3Taky6/tMG7akOl3OJkxTvzZB9SKH9Vb8pxIuI=",
        "owner": "nushell",
        "repo": "nushell",
        "rev": "db9b88089e9f8ac69ce1a2b0e9f3aff2b892bae5",
        "type": "github"
      },
      "original": {
        "owner": "nushell",
        "repo": "nushell",
        "type": "github"
      }
    },
    "root": {
      "inputs": {
        "flake-utils": "flake-utils",
        "naersk": "naersk",
        "nixpkgs": "nixpkgs",
        "nushell": "nushell"
      }
    }
  },
  "root": "root",
  "version": 7
}

[tv42]

For anyone else who stumbled here by wild googling, https://github.com/ipetkov/crane managed to build my problem project without issues.