diff --git a/pkgs/applications/science/astronomy/astrolog/default.nix b/pkgs/applications/science/astronomy/astrolog/default.nix
index 90749f54310d..dc567339d136 100644
--- a/pkgs/applications/science/astronomy/astrolog/default.nix
+++ b/pkgs/applications/science/astronomy/astrolog/default.nix
@@ -1,4 +1,8 @@
-{ lib, stdenv, fetchzip, fetchurl, xorg, gnused }:
+{ lib, stdenv, fetchzip, fetchurl, xorg, gnused
+, withBigAtlas ? true
+, withEphemeris ? true
+, withMoonsEphemeris ? true
+}:
 stdenv.mkDerivation rec {
   pname = "astrolog";
   version = "7.30";
@@ -23,15 +27,30 @@ stdenv.mkDerivation rec {
       sha256 = "1mwvpvfk3lxjcc79zvwl4ypqzgqzipnc01cjldxrmx56xkc35zn7";
       stripRoot = false;
     };
+    moonsEphemeris = fetchzip {
+      url = "https://www.astrolog.org/ftp/ephem/moons/sepm.zip";
+      sha256 = "0labcidm8mrwvww93nwpp5738m9ff9q48cqzbgd18xny1jf6f8xd";
+      stripRoot = false;
+    };
     atlas = fetchurl {
       url = "http://astrolog.org/ftp/atlas/atlasbig.as";
-      sha256 = "1k8cy8gpcvkwkhyz248qhvrv5xiwp1n1s3b7rlz86krh7vzz01mp";
+      sha256 = "001bmqyldsbk4bdliqfl4a9ydrh1ff13wccvfniwaxlmvkridx2q";
     };
   in ''
     mkdir -p $out/bin $out/astrolog
-    cp -r ${ephemeris}/*.se1 $out/astrolog
     cp *.as $out/astrolog
     install astrolog $out/bin
+    ${lib.optionalString withBigAtlas "cp ${atlas} $out/astrolog/atlas.as"}
+    ${lib.optionalString withEphemeris ''
+      sed -i "/-Yi1/s#\".*\"#\"$out/ephemeris\"#" $out/astrolog/astrolog.as
+      mkdir -p $out/ephemeris
+      cp -r ${ephemeris}/*.se1 $out/ephemeris
+    ''}
+    ${lib.optionalString withMoonsEphemeris ''
+      sed -i "/-Yi1/s#\".*\"#\"$out/ephemeris\"#" $out/astrolog/astrolog.as
+      mkdir -p $out/ephemeris
+      cp -r ${moonsEphemeris}/*.se1 $out/ephemeris
+    ''}
   '';
 
   meta = with lib; {