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author | Joachim Fasting <joachifm@fastmail.fm> | 2016-10-25 20:56:54 +0200 |
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committer | Joachim Fasting <joachifm@fastmail.fm> | 2016-10-27 14:15:54 +0200 |
commit | 8180922d236c53b5e09cfe1b63f6c12977bb2803 (patch) | |
tree | 25ef9efe35719e555df74d2c95a17bbe8f4745d9 /nixos/modules/services/networking/cjdns.nix | |
parent | 9654e09b5a4bd44ecf16f8c435afa834a76ef2b1 (diff) | |
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cjdns service: refactor cjdns hosts builder
The old version would export two lists to a bash builder and do pairwise processing on the bash side. In the new version we instead generate a logic free builder on the Nix side. This is not only conceptually simpler but reduces the amount of code and intermediate values.
Diffstat (limited to 'nixos/modules/services/networking/cjdns.nix')
-rw-r--r-- | nixos/modules/services/networking/cjdns.nix | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/nixos/modules/services/networking/cjdns.nix b/nixos/modules/services/networking/cjdns.nix index 849d273a41d..5e15e40ea0c 100644 --- a/nixos/modules/services/networking/cjdns.nix +++ b/nixos/modules/services/networking/cjdns.nix @@ -28,21 +28,18 @@ let }; }; - peers = mapAttrsToList (n: v: v) (cfg.ETHInterface.connectTo // cfg.UDPInterface.connectTo); - - pubs = toString (map (p: if p.hostname == "" then "" else p.publicKey) peers); - hosts = toString (map (p: if p.hostname == "" then "" else p.hostname) peers); - - cjdnsHosts = - if hosts != "" then - import (pkgs.stdenv.mkDerivation { - name = "cjdns-hosts"; - builder = ./cjdns-hosts.sh; - - inherit (pkgs) cjdns; - inherit pubs hosts; - }) - else ""; + # Additional /etc/hosts entries for peers with an associated hostname + cjdnsExtraHosts = import (pkgs.runCommand "cjdns-hosts" {} + # Generate a builder that produces an output usable as a Nix string value + '' + exec >$out + echo \'\' + ${concatStringsSep "\n" (mapAttrsToList (k: v: + optionalString (v.hostname != "") + "echo $(${pkgs.cjdns}/bin/publictoip6 ${x.key}) ${x.host}") + (cfg.ETHInterface.connectTo // cfg.UDPInterface.connectTo))} + echo \'\' + ''); parseModules = x: x // { connectTo = mapAttrs (name: value: { inherit (value) password publicKey; }) x.connectTo; }; @@ -254,7 +251,7 @@ in }; }; - networking.extraHosts = "${cjdnsHosts}"; + networking.extraHosts = cjdnsExtraHosts; assertions = [ { assertion = ( cfg.ETHInterface.bind != "" || cfg.UDPInterface.bind != "" || cfg.confFile != null ); |