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-rw-r--r--third_party/overlays/ecl-static.nix37
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diff --git a/third_party/overlays/ecl-static.nix b/third_party/overlays/ecl-static.nix
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+{ ... }:
+
+self: super:
+
+{
+  # Statically linked ECL with statically linked dependencies.
+  # Works quite well, but solving this properly in a nixpkgs
+  # context will require figuring out cross compilation (for
+  # pkgsStatic), so we're gonna use this override for now.
+  #
+  # Note that ecl-static does mean that we have things
+  # statically linked against GMP and ECL which are LGPL.
+  # I believe this should be alright: The way ppl are gonna
+  # interact with the distributed binaries (i. e. the binary
+  # cache) is Nix in the depot monorepo, so the separability
+  # requirement should be satisfied: Source code or overriding
+  # would be available as ways to swap out the used GMP in the
+  # program.
+  # See https://www.gnu.org/licenses/gpl-faq.en.html#LGPLStaticVsDynamic
+  ecl-static = (super.pkgsMusl.ecl.override {
+    inherit (self.pkgsStatic) gmp libffi boehmgc;
+  }).overrideAttrs (drv: rec {
+    # version must not be changed as it indicates where to find the bundled libs,
+    # using ecl HEAD is necessary for us since it includes multiple fixes to do
+    # with bytecode compilation and allows to concatenate fasc files again.
+    src = self.fetchFromGitLab {
+      owner = "embeddable-common-lisp";
+      repo = "ecl";
+      rev = "1c989247c1b0bf1d38a76aec30b9ca5e41afe1e3";
+      sha256 = "0bzjqw6m1kk5z5b81yizic347k931msp5lf78x65dcw3fqfwv3xn";
+    };
+    configureFlags = drv.configureFlags ++ [
+      "--disable-shared"
+      "--with-dffi=no" # will fail at runtime anyways if statically linked
+    ];
+  });
+}