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-rw-r--r--pkgs/development/interpreters/octave/with-packages.nix6
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diff --git a/pkgs/development/interpreters/octave/with-packages.nix b/pkgs/development/interpreters/octave/with-packages.nix
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+{ buildEnv, octavePackages }:
+
+# Takes the buildEnv defined for Octave and the set of octavePackages, and returns
+# a function, which when given a function whose return value is a list of extra
+# packages to install, builds and returns that environment.
+f: let packages = f octavePackages; in buildEnv.override { extraLibs = packages; }