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-rw-r--r--pkgs/development/beam-modules/default.nix12
-rw-r--r--pkgs/development/interpreters/elixir/1.12.nix9
2 files changed, 17 insertions, 4 deletions
diff --git a/pkgs/development/beam-modules/default.nix b/pkgs/development/beam-modules/default.nix
index 601505e1f4882..8fe7de96b2442 100644
--- a/pkgs/development/beam-modules/default.nix
+++ b/pkgs/development/beam-modules/default.nix
@@ -40,7 +40,12 @@ let
       erlang-ls = callPackage ./erlang-ls { };
 
       # BEAM-based languages.
-      elixir = elixir_1_11;
+      elixir = elixir_1_12;
+
+      elixir_1_12 = lib'.callElixir ../interpreters/elixir/1.12.nix {
+        inherit erlang;
+        debugInfo = true;
+      };
 
       elixir_1_11 = lib'.callElixir ../interpreters/elixir/1.11.nix {
         inherit erlang;
@@ -62,6 +67,8 @@ let
         debugInfo = true;
       };
 
+      # Remove old versions of elixir, when the supports fades out:
+      # https://hexdocs.pm/elixir/compatibility-and-deprecations.html
       elixir_1_7 = lib'.callElixir ../interpreters/elixir/1.7.nix {
         inherit erlang;
         debugInfo = true;
@@ -69,9 +76,6 @@ let
 
       elixir_ls = callPackage ./elixir_ls.nix { inherit elixir fetchMixDeps mixRelease; };
 
-      # Remove old versions of elixir, when the supports fades out:
-      # https://hexdocs.pm/elixir/compatibility-and-deprecations.html
-
       lfe = lfe_1_3;
       lfe_1_2 = lib'.callLFE ../interpreters/lfe/1.2.nix { inherit erlang buildRebar3 buildHex; };
       lfe_1_3 = lib'.callLFE ../interpreters/lfe/1.3.nix { inherit erlang buildRebar3 buildHex; };
diff --git a/pkgs/development/interpreters/elixir/1.12.nix b/pkgs/development/interpreters/elixir/1.12.nix
new file mode 100644
index 0000000000000..f84f4255ccac9
--- /dev/null
+++ b/pkgs/development/interpreters/elixir/1.12.nix
@@ -0,0 +1,9 @@
+{ mkDerivation }:
+
+# How to obtain `sha256`:
+# nix-prefetch-url --unpack https://github.com/elixir-lang/elixir/archive/v${version}.tar.gz
+mkDerivation {
+  version = "1.12.0";
+  sha256 = "sha256-Jnxi0vFYMnwEgTqkPncZbj+cR57hjvH77RCseJdUoFs=";
+  minimumOTPVersion = "22";
+}