pool: add pkg, module & tests

pkgs/default.nix

@@ -10,6 +10,7 @@ let self = {
   nixops19_09 = pkgs.callPackage ./nixops { };
   netns-exec = pkgs.callPackage ./netns-exec { };
   lightning-loop = pkgs.callPackage ./lightning-loop { };
+  lightning-pool = pkgs.callPackage ./lightning-pool { };
   extra-container = pkgs.callPackage ./extra-container { };
   clightning-plugins = import ./clightning-plugins pkgs self.nbPython3Packages;
   clboss = pkgs.callPackage ./clboss { };

pkgs/lightning-pool/default.nix

@@ -0,0 +1,25 @@
+{ pkgs, buildGoModule, fetchurl, lib }:
+
+buildGoModule rec {
+  pname = "lightning-pool";
+  version = "0.4.4-alpha";
+
+  src = fetchurl {
+    url = "https://github.com/lightninglabs/pool/archive/v${version}.tar.gz";
+    # Use ./get-sha256.sh to fetch latest (verified) sha256
+    sha256 = "c50f3b10a4fa7ce1afd6a00fd6c44474f44c8c773de34261e62ae805540ab140";
+  };
+
+  subPackages = [ "cmd/pool" "cmd/poold" ];
+
+  vendorSha256 = "190qy3cz18ipv8ilpqhbaaxfi9j2isxpwhagzzspa3pwcpssrv52";
+
+  meta = with lib; {
+    description = ''
+      A non-custodial batched uniform clearing-price auction for Lightning Channel Leases (LCL)
+    '';
+    homepage = "https://github.com/lightninglabs/pool";
+    license = lib.licenses.mit;
+    maintainers = with maintainers; [ sputn1ck ];
+  };
+}

pkgs/lightning-pool/get-sha256.sh

@@ -0,0 +1,27 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p git gnupg
+set -euo pipefail
+
+TMPDIR="$(mktemp -d -p /tmp)"
+trap "rm -rf $TMPDIR" EXIT
+cd $TMPDIR
+
+echo "Fetching latest release"
+git clone https://github.com/lightninglabs/pool 2> /dev/null
+cd pool
+latest=$(git describe --tags `git rev-list --tags --max-count=1`)
+echo "Latest release is ${latest}"
+
+# GPG verification
+export GNUPGHOME=$TMPDIR
+echo "Fetching Olaoluwa Osuntokun's key"
+gpg --keyserver hkps://keys.openpgp.org --recv-keys 60A1FA7DA5BFF08BDCBBE7903BBD59E99B280306 2> /dev/null
+echo "Fetching Oliver Gugger's key"
+gpg --keyserver hkps://keys.openpgp.org --recv-keys F4FC70F07310028424EFC20A8E4256593F177720 2> /dev/null
+
+echo "Verifying latest release"
+git verify-tag ${latest}
+
+echo "tag: ${latest}"
+# The prefix option is necessary because GitHub prefixes the archive contents in this format
+echo "sha256: $(git archive --format tar.gz --prefix=pool-${latest//v}/ ${latest} | sha256sum | cut -d\  -f1)"