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-rw-r--r--gnu/packages/erlang.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/gnu/packages/erlang.scm b/gnu/packages/erlang.scm
index dd07c1a617..a236722474 100644
--- a/gnu/packages/erlang.scm
+++ b/gnu/packages/erlang.scm
@@ -792,6 +792,13 @@ rebar3.")
#:phases
#~(modify-phases %standard-phases
(delete 'configure)
+ ;; By default LFE compiler itself is not deterministic. We fix it
+ ;; here. For more details see: https://github.com/lfe/lfe/issues/492.
+ (add-after 'unpack 'make-deterministic
+ (lambda _
+ (substitute* "src/lfe_env.erl"
+ (("maps:fold\\(F, A, D\\)")
+ "lists:sort(maps:fold(F, A, D))"))))
;; The following is inspired by rebar-build-system.scm
(add-before 'check 'erlang-depends
(lambda* (#:key inputs #:allow-other-keys)