diff --git a/nixos/doc/manual/release-notes/rl-2405.section.md b/nixos/doc/manual/release-notes/rl-2405.section.md
index dc90a7549928..b8914e4d3a95 100644
--- a/nixos/doc/manual/release-notes/rl-2405.section.md
+++ b/nixos/doc/manual/release-notes/rl-2405.section.md
@@ -154,6 +154,8 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
 
 - `services.homepage-dashboard` now takes it's configuration using native Nix expressions, rather than dumping templated configurations into `/var/lib/homepage-dashboard` where they were previously managed manually. There are now new options which allow the configuration of bookmarks, services, widgets and custom CSS/JS natively in Nix.
 
+- `hare` may now be cross-compiled. For that to work, however, `haredoc` needed to stop being built together with it. Thus, the latter is now its own package with the name of `haredoc`.
+
 - The legacy and long deprecated systemd target `network-interfaces.target` has been removed. Use `network.target` instead.
 
 - `services.frp.settings` now generates the frp configuration file in TOML format as [recommended by upstream](https://github.com/fatedier/frp#configuration-files), instead of the legacy INI format. This has also introduced other changes in the configuration file structure and options.
diff --git a/pkgs/by-name/ha/hare/002-dont-build-haredoc.patch b/pkgs/by-name/ha/hare/002-dont-build-haredoc.patch
new file mode 100644
index 000000000000..0e921477766e
--- /dev/null
+++ b/pkgs/by-name/ha/hare/002-dont-build-haredoc.patch
@@ -0,0 +1,43 @@
+diff --git a/Makefile b/Makefile
+index 2482be1f..9d58bc81 100644
+--- a/Makefile
++++ b/Makefile
+@@ -5,7 +5,7 @@ all:
+ include config.mk
+ include makefiles/$(PLATFORM).$(ARCH).mk
+ 
+-all: $(BINOUT)/hare $(BINOUT)/haredoc docs
++all: $(BINOUT)/hare docs
+ 
+ HARE_DEFINES = \
+ 	-D PLATFORM:str='"$(PLATFORM)"' \
+@@ -79,11 +79,10 @@ docs: \
+ 	docs/haredoc.1 \
+ 	docs/hare-run.1 \
+ 	docs/hare-test.1 \
+-	docs/haredoc.5 \
+ 	docs/hare-module.5
+ 
+-MAN1 = hare hare-build hare-cache hare-deps haredoc hare-run hare-test
+-MAN5 = haredoc hare-module
++MAN1 = hare hare-build hare-cache hare-deps hare-run hare-test
++MAN5 = hare-module
+ 
+ bootstrap:
+ 	@BINOUT=$(BINOUT) ./scripts/genbootstrap
+@@ -104,7 +103,6 @@ install-cmd:
+ 		'$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1' \
+ 		'$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man5'
+ 	install -m755 '$(BINOUT)/hare' '$(DESTDIR)$(BINDIR)/hare'
+-	install -m755 '$(BINOUT)/haredoc' '$(DESTDIR)$(BINDIR)/haredoc'
+ 	for i in $(MAN1); do install -m644 docs/$$i.1 '$(DESTDIR)$(MANDIR)'/man1/$$i.1; done
+ 	for i in $(MAN5); do install -m644 docs/$$i.5 '$(DESTDIR)$(MANDIR)'/man5/$$i.5; done
+ 
+@@ -115,7 +113,6 @@ install-mods:
+ 
+ uninstall:
+ 	rm -- '$(DESTDIR)$(BINDIR)/hare'
+-	rm -- '$(DESTDIR)$(BINDIR)/haredoc'
+ 	for i in $(MAN1); do rm -- '$(DESTDIR)$(MANDIR)'/man1/$$i.1; done
+ 	for i in $(MAN5); do rm -- '$(DESTDIR)$(MANDIR)'/man5/$$i.5; done
+ 	rm -r -- '$(DESTDIR)$(STDLIB)'
diff --git a/pkgs/by-name/ha/hare/package.nix b/pkgs/by-name/ha/hare/package.nix
index 9468e049c4e5..49e4d91db7f5 100644
--- a/pkgs/by-name/ha/hare/package.nix
+++ b/pkgs/by-name/ha/hare/package.nix
@@ -9,6 +9,7 @@
 , scdoc
 , tzdata
 , substituteAll
+, fetchpatch
 , callPackage
 , enableCrossCompilation ? (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.is64bit)
 , pkgsCross
@@ -32,6 +33,11 @@ in
 
 let
   arch = stdenv.hostPlatform.uname.processor;
+  qbePlatform = {
+    x86_64 = "amd64_sysv";
+    aarch64 = "arm64";
+    riscv64 = "rv64";
+  }.${arch};
   platform = lib.toLower stdenv.hostPlatform.uname.system;
   embeddedOnBinaryTools =
     let
@@ -74,6 +80,14 @@ stdenv.mkDerivation (finalAttrs: {
       src = ./001-tzdata.patch;
       inherit tzdata;
     })
+    # Use correct comment syntax for debug+riscv64.
+    (fetchpatch {
+      url = "https://git.sr.ht/~sircmpwn/hare/commit/80e45e4d931a6e90d999846b86471cac00d2a6d5.patch";
+      hash = "sha256-S7nXpiO0tYnKpmpj+fLkolGeHb1TrmgKlMF0+j0qLPQ=";
+    })
+    # Don't build haredoc since it uses the build `hare` bin, which breaks
+    # cross-compilation.
+    ./002-dont-build-haredoc.patch
   ];
 
   nativeBuildInputs = [
@@ -95,6 +109,10 @@ stdenv.mkDerivation (finalAttrs: {
     "PREFIX=${builtins.placeholder "out"}"
     "ARCH=${arch}"
     "VERSION=${finalAttrs.version}-nixpkgs"
+    "QBEFLAGS=-t${qbePlatform}"
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "AS=${stdenv.cc.targetPrefix}as"
+    "LD=${stdenv.cc.targetPrefix}ld"
     # Strip the variable of an empty $(SRCDIR)/hare/third-party, since nix does
     # not follow the FHS.
     "HAREPATH=$(SRCDIR)/hare/stdlib"
diff --git a/pkgs/by-name/ha/harec/package.nix b/pkgs/by-name/ha/harec/package.nix
index 11470c7f828f..e95ad7ed7095 100644
--- a/pkgs/by-name/ha/harec/package.nix
+++ b/pkgs/by-name/ha/harec/package.nix
@@ -7,6 +7,11 @@
 let
   platform = lib.toLower stdenv.hostPlatform.uname.system;
   arch = stdenv.hostPlatform.uname.processor;
+  qbePlatform = {
+    x86_64 = "amd64_sysv";
+    aarch64 = "arm64";
+    riscv64 = "rv64";
+  }.${arch};
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "harec";
@@ -31,6 +36,10 @@ stdenv.mkDerivation (finalAttrs: {
     "PREFIX=${builtins.placeholder "out"}"
     "ARCH=${arch}"
     "VERSION=${finalAttrs.version}-nixpkgs"
+    "QBEFLAGS=-t${qbePlatform}"
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "AS=${stdenv.cc.targetPrefix}as"
+    "LD=${stdenv.cc.targetPrefix}ld"
   ];
 
   strictDeps = true;
diff --git a/pkgs/by-name/ha/haredoc/package.nix b/pkgs/by-name/ha/haredoc/package.nix
new file mode 100644
index 000000000000..2476e7d937c5
--- /dev/null
+++ b/pkgs/by-name/ha/haredoc/package.nix
@@ -0,0 +1,55 @@
+{ lib
+, stdenv
+, scdoc
+, hare
+}:
+let
+  arch = stdenv.hostPlatform.uname.processor;
+in
+stdenv.mkDerivation {
+  pname = "haredoc";
+  outputs = [ "out" "man" ];
+  inherit (hare) version src;
+
+  strictDeps = true;
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [
+    scdoc
+    hare
+  ];
+
+  preBuild = ''
+    HARECACHE="$(mktemp -d)"
+    export HARECACHE
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    hare build -qR -a ${arch} -o haredoc ./cmd/haredoc
+    scdoc <docs/haredoc.1.scd >haredoc.1
+    scdoc <docs/haredoc.5.scd >haredoc.5
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm0755 ./haredoc $out/bin/haredoc
+    install -Dm0644 ./haredoc.1 $out/share/man/man1/haredoc.1
+    install -Dm0644 ./haredoc.5 $out/share/man/man5/haredoc.5
+
+    runHook postInstall
+  '';
+
+  meta = {
+    homepage = "https://harelang.org/";
+    description = "Hare's documentation tool";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ onemoresuza ];
+    mainProgram = "haredoc";
+    inherit (hare.meta) platforms badPlatforms;
+  };
+}
diff --git a/pkgs/development/compilers/qbe/default.nix b/pkgs/development/compilers/qbe/default.nix
index aeb739bb84d0..00c91e2671ec 100644
--- a/pkgs/development/compilers/qbe/default.nix
+++ b/pkgs/development/compilers/qbe/default.nix
@@ -12,7 +12,10 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-UgtJnZF/YtD54OBy9HzGRAEHx5tC9Wo2YcUidGwrv+s=";
   };
 
-  makeFlags = [ "PREFIX=$(out)" ];
+  makeFlags = [
+    "PREFIX=$(out)"
+    "CC=${stdenv.cc.targetPrefix}cc"
+  ];
 
   doCheck = true;