feat(3p/lisp): Add postmodern

Change-Id: If6ffd9a2344dc98e95312ddcce14ba5c2519d004
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1420
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

third_party/lisp/cl-unicode.nix

@@ -0,0 +1,77 @@
+{ depot, pkgs, ... }:
+
+let
+  inherit (pkgs) sbcl runCommand writeText;
+  inherit (depot.nix.buildLisp) bundled;
+
+  src = pkgs.fetchFromGitHub {
+    owner = "edicl";
+    repo = "cl-unicode";
+    rev = "8073fc5634c9d4802888ac03abf11dfe383e16fa";
+    sha256 = "0ykx2s9lqfl74p1px0ik3l2izd1fc9jd1b4ra68s5x34rvjy0hza";
+  };
+
+  cl-unicode-base = depot.nix.buildLisp.library {
+    name = "cl-unicode-base";
+    deps = with depot.third_party.lisp; [
+      cl-ppcre
+    ];
+
+    srcs = map (f: src + ("/" + f)) [
+      "packages.lisp"
+      "specials.lisp"
+      "util.lisp"
+    ];
+  };
+
+  cl-unicode-build = depot.nix.buildLisp.program {
+    name = "cl-unicode-build";
+    deps = with depot.third_party.lisp; [
+      cl-unicode-base
+      flexi-streams
+      (bundled "uiop")
+    ];
+
+    srcs = (map (f: src + ("/build/" + f)) [
+      "util.lisp"
+      "char-info.lisp"
+      "read.lisp"
+    ]) ++ [
+      (runCommand "dump.lisp" {} ''
+        substitute ${src}/build/dump.lisp $out \
+          --replace ':defaults *this-file*' ":defaults (uiop:getcwd)"
+      '')
+
+      (writeText "export-create-source-files.lisp" ''
+        (in-package :cl-unicode)
+        (export 'create-source-files)
+      '')
+    ];
+
+    main = "cl-unicode:create-source-files";
+  };
+
+
+  generated = runCommand "cl-unicode-generated" {} ''
+    mkdir -p $out/build
+    mkdir -p $out/test
+    cd $out/build
+    pwd
+    ${cl-unicode-build}/bin/cl-unicode-build
+  '';
+
+in
+depot.nix.buildLisp.library {
+  name = "cl-unicode";
+  deps = [cl-unicode-base];
+  srcs = [
+    "${src}/conditions.lisp"
+    "${generated}/lists.lisp"
+    "${generated}/hash-tables.lisp"
+    "${src}/api.lisp"
+    "${generated}/methods.lisp"
+    "${src}/test-functions.lisp"
+    "${src}/derived.lisp"
+    "${src}/alias.lisp"
+  ];
+}