gistfile1.txt

$ nix build -f https://github.com/input-output-hk/nix-tools/archive/master.tar.gz
trace: gitSource.nix: /nix/store/6iymd0909n1lggkany7y13cg2hsxaz2n-master.tar.gz does not seem to be a git repository,
assuming it is a clean checkout.
trace: Using index-state: 2020-01-10T00:00:00Z
builder for '/nix/store/glvsk7b5zkalmsd8lmka5jc3xp453zhc-hnix-617d086.drv' failed with exit code 1; last 10 log lines:
   * [new tag]         1.5.1       -> 1.5.1
   * [new tag]         1.5.2       -> 1.5.2
   * [new tag]         1.5.3       -> 1.5.3
   * [new tag]         1.6         -> 1.6
   * [new tag]         1.6.1       -> 1.6.1
   * [new tag]         1.7         -> 1.7
   * [new tag]         1.8         -> 1.8
   * [new tag]         1.9         -> 1.9
  fatal: reference is not a tree: c43033101cbba5f23e8b1165521a8a6e1eb082ea
  Unable to checkout c43033101cbba5f23e8b1165521a8a6e1eb082ea from https://github.com/haskell-nix/nix.
cannot build derivation '/nix/store/vmik8mhc8vyjcpwpzdcn5s9d7b6ja3wh-hnix-0.5.2-lib-hnix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/0hlgyqa21ix8ikz2023j2ghwppjd6008-nix-tools-0.1.0.0-exe-cabal-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/r636mbb2pf8l1g6sdl3b4kqs36k3i3nq-nix-tools-0.1.0.0-exe-hackage-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/c0chc9w0hqkfzblp7qkh0nz0z5n5gq25-nix-tools-0.1.0.0-exe-hashes-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/mw3xi31058pg9ai96fhfmm34bzkw9x23-nix-tools-0.1.0.0-exe-lts-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/3zqjgy92zkbndkhcvzqfsf7wk33drmmw-nix-tools-0.1.0.0-exe-plan-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/ng65j71j7wjgdiyyrh7jhadlc9x8mkvf-nix-tools-0.1.0.0-exe-stack-to-nix-config.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/78y1bpq71308k8r364a77pprc5nnd73p-nix-tools-0.1.0.0-exe-cabal-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/wckfcwxk7djsldpmyjai6ch9zjm3db93-nix-tools-0.1.0.0-exe-hackage-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/7sp2yghqrzhaarilxqh5fdgvc0r2xjhm-nix-tools-0.1.0.0-exe-hashes-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/d203h4hgfd6pmm87364bck3qldjigfkn-nix-tools-0.1.0.0-exe-lts-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/ziz4qks8djirf6hywb902ddlkxydgyfw-nix-tools-0.1.0.0-exe-plan-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/bl49bjb1ql3lg1llz4af9n0kwysd2bm0-nix-tools-0.1.0.0-exe-stack-to-nix.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/fd7k5s9lkzszfd4b8nsv5b1qhxvrk8am-nix-tools.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/12qb3hg13br1v8w43sxd6qhx2nk2db9p-plan-to-nix-pkgs.drv': 1 dependencies couldn't be built
[19 built (1 failed)]
error: build of '/nix/store/12qb3hg13br1v8w43sxd6qhx2nk2db9p-plan-to-nix-pkgs.drv' failed
(use '--show-trace' to show detailed location information)