Travis fix for old nix

smarkets · May 4, 2019 · 006713e · 006713e
1 parent 7df5003
commit 006713e
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/nix/sources.nix b/nix/sources.nix
@@ -1,6 +1,11 @@
 # Read in the json spec for packages we want (so it can be auto-updated).
 # niv: no_update
-with builtins;
-mapAttrs
-  (_: spec: spec // { outPath = fetchTarball { inherit (spec) url sha256; }; })
-  (fromJSON (readFile ./sources.json))
+
+# make travis happy, reasonably new nix doesn't need this
+let mapAttrs = builtins.mapAttrs or
+    (f: set:
+      builtins.listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (builtins.attrNames set)));
+in with builtins;
+   mapAttrs
+     (_: spec: spec // { outPath = fetchTarball { inherit (spec) url sha256; }; })
+     (fromJSON (readFile ./sources.json))