checks/check-static-exts-cross: init, move checks to separate dir

checks/check-static-exts-cross.nix

@@ -0,0 +1,37 @@
+{ self, pkgs }:
+let
+  pkgs' = pkgs.pkgsCross.aarch64-multiplatform;
+
+  sqlite-example-exts-static = pkgs'.callPackage ./util/sqlite-example-exts-static.nix { };
+
+  sqlite-with-static-exts = self.mkSqlite {
+    pkgs = pkgs';
+
+    extensions = [
+      {
+        library = "${sqlite-example-exts-static}/lib/libaddext.a";
+        init = "sqlite3_addext_init";
+      }
+      {
+        library = "${sqlite-example-exts-static}/lib/libsubext.a";
+        init = "sqlite3_subext_init";
+      }
+      {
+        library = "${sqlite-example-exts-static}/lib/libmultext.a";
+        init = "sqlite3_multext_init";
+      }
+    ];
+  };
+in
+pkgs'.runCommand "test-sqlite-with-static-exts-aarch64" {
+  nativeBuildInputs = [ sqlite-with-static-exts.sqlite-cli ];
+
+  passthru = {
+    inherit sqlite-example-exts-static;
+    inherit sqlite-with-static-exts;
+  };
+} ''
+  mkdir -p "$out"
+  sqlite3 :memory: <<<"SELECT myadd(1, 2), mysub(5, 3), mymult(4, 6);" | tee "$out/test.log"
+  grep -q -F "3|2|24" "$out/test.log" || (echo "Unexpected output from sqlite3 with static extensions" && exit 1)
+ ''

checks/check-static-exts.nix

@@ -0,0 +1,35 @@
+{ self, pkgs }:
+let
+  sqlite-example-exts-static = pkgs.callPackage ./util/sqlite-example-exts-static.nix { };
+
+  sqlite-with-static-exts = self.mkSqlite {
+    inherit pkgs;
+
+    extensions = [
+      {
+        library = "${sqlite-example-exts-static}/lib/libaddext.a";
+        init = "sqlite3_addext_init";
+      }
+      {
+        library = "${sqlite-example-exts-static}/lib/libsubext.a";
+        init = "sqlite3_subext_init";
+      }
+      {
+        library = "${sqlite-example-exts-static}/lib/libmultext.a";
+        init = "sqlite3_multext_init";
+      }
+    ];
+  };
+in
+pkgs.runCommand "test-sqlite-with-static-exts" {
+  nativeBuildInputs = [ sqlite-with-static-exts.sqlite-cli ];
+
+  passthru = {
+    inherit sqlite-example-exts-static;
+    inherit sqlite-with-static-exts;
+  };
+} ''
+  mkdir -p "$out"
+  sqlite3 :memory: <<<"SELECT myadd(1, 2), mysub(5, 3), mymult(4, 6);" | tee "$out/test.log"
+  grep -q -F "3|2|24" "$out/test.log" || (echo "Unexpected output from sqlite3 with static extensions" && exit 1)
+ ''

checks/util/sqlite-example-exts-static.nix

@@ -0,0 +1,35 @@
+{
+  sqlite,
+  stdenv,
+}:
+stdenv.mkDerivation {
+  name = "sqlite-example-exts-static";
+  src = ../sqlite-example-exts;
+
+  env.NIX_CFLAGS_COMPILE = "-DSQLITE_CORE";
+
+  buildInputs = [ sqlite.dev ];
+  buildPhase = ''
+    runHook preBuild
+
+    "$CC" -c addext.c
+    "$AR" rcs libaddext.a addext.o
+
+    "$CC" -c subext.c
+    "$AR" rcs libsubext.a subext.o
+
+    "$CC" -c multext.c
+    "$AR" rcs libmultext.a multext.o
+
+    runHook postBuild
+  '';
+
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm444 *.a -t "$out/lib"
+
+    runHook postInstall
+  '';
+}

flake.nix

@@ -41,70 +41,9 @@
       "sqlite-static${result._suffix}" = result.sqlite-static;
     }) productVars));
 
-    checks = forAllSystems (system: pkgs: let
-      sqlite-example-exts-static = pkgs.stdenv.mkDerivation {
-        name = "sqlite-example-exts-static";
-        src = ./sqlite-example-exts;
-
-        env.NIX_CFLAGS_COMPILE = "-DSQLITE_CORE";
-
-        buildInputs = with pkgs; [ sqlite.dev ];
-        buildPhase = ''
-          runHook preBuild
-
-          "$CC" -c addext.c
-          "$AR" rcs libaddext.a addext.o
-
-          "$CC" -c subext.c
-          "$AR" rcs libsubext.a subext.o
-
-          "$CC" -c multext.c
-          "$AR" rcs libmultext.a multext.o
-
-          runHook postBuild
-        '';
-
-
-        installPhase = ''
-          runHook preInstall
-
-          install -Dm444 *.a -t "$out/lib"
-
-          runHook postInstall
-        '';
-      };
-
-      sqlite-with-static-exts = self.mkSqlite {
-        inherit pkgs;
-
-        extensions = [
-          {
-            library = "${sqlite-example-exts-static}/lib/libaddext.a";
-            init = "sqlite3_addext_init";
-          }
-          {
-            library = "${sqlite-example-exts-static}/lib/libsubext.a";
-            init = "sqlite3_subext_init";
-          }
-          {
-            library = "${sqlite-example-exts-static}/lib/libmultext.a";
-            init = "sqlite3_multext_init";
-          }
-        ];
-      };
-    in {
-      checkExts = pkgs.runCommand "test-sqlite-with-static-exts" {
-        nativeBuildInputs = [ sqlite-with-static-exts.sqlite-cli ];
-
-        passthru = {
-          inherit sqlite-example-exts-static;
-          inherit sqlite-with-static-exts;
-        };
-      } ''
-        mkdir -p "$out"
-        sqlite3 :memory: <<<"SELECT myadd(1, 2), mysub(5, 3), mymult(4, 6);" | tee "$out/test.log"
-        grep -q -F "3|2|24" "$out/test.log" || (echo "Unexpected output from sqlite3 with static extensions" && exit 1)
-       '';
+    checks = forAllSystems (system: pkgs: {
+      checkStaticExts = import ./checks/check-static-exts.nix { inherit self pkgs; };
+      checkStaticExtsCross = import ./checks/check-static-exts-cross.nix { inherit self pkgs; };
     });
   };
 }