diff --git a/third_party/nixpkgs/patches/0001-nixos-systemd-boot-create-boot-entries-for-specialis.patch b/third_party/nixpkgs/patches/0001-nixos-systemd-boot-create-boot-entries-for-specialis.patch
deleted file mode 100644
index 025c67a573..0000000000
--- a/third_party/nixpkgs/patches/0001-nixos-systemd-boot-create-boot-entries-for-specialis.patch
+++ /dev/null
@@ -1,204 +0,0 @@
-From 13fad0f81b2bd50fd421bd5856a35f1f7c032257 Mon Sep 17 00:00:00 2001
-From: Luke Granger-Brown <git@lukegb.com>
-Date: Sun, 3 Jan 2021 18:29:34 +0000
-Subject: [PATCH] nixos/systemd-boot: create boot entries for specialisations
-
-Some specialisations (such as those which affect various boot-time
-attributes) cannot be switched to at runtime. This allows picking the
-specialisation at boot time.
----
- .../systemd-boot/systemd-boot-builder.py      | 73 +++++++++++++------
- nixos/tests/systemd-boot.nix                  | 23 ++++++
- 2 files changed, 73 insertions(+), 23 deletions(-)
-
-diff --git a/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py b/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
-index 6c26b4e0f87..c38bef9d6d4 100644
---- a/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
-+++ b/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
-@@ -17,19 +17,28 @@ import glob
- import os.path
- from typing import Tuple, List, Optional
- 
-+SystemIdentifier = Tuple[Optional[str], int, Optional[str]]
-+
- 
- def copy_if_not_exists(source: str, dest: str) -> None:
-     if not os.path.exists(dest):
-         shutil.copyfile(source, dest)
- 
- 
--def system_dir(profile: Optional[str], generation: int) -> str:
-+def generation_dir(profile: Optional[str], generation: int) -> str:
-     if profile:
-         return "/nix/var/nix/profiles/system-profiles/%s-%d-link" % (profile, generation)
-     else:
-         return "/nix/var/nix/profiles/system-%d-link" % (generation)
- 
--BOOT_ENTRY = """title NixOS{profile}
-+def system_dir(profile: Optional[str], generation: int, specialisation: Optional[str]) -> str:
-+    d = generation_dir(profile, generation)
-+    if specialisation:
-+        return os.path.join(d, "specialisation", specialisation)
-+    else:
-+        return d
-+
-+BOOT_ENTRY = """title NixOS{profile}{specialisation}
- version Generation {generation} {description}
- linux {kernel}
- initrd {initrd}
-@@ -46,26 +55,34 @@ efi /efi/memtest86/BOOTX64.efi
- """
- 
- 
--def write_loader_conf(profile: Optional[str], generation: int) -> None:
-+def generation_conf_filename(profile: Optional[str], generation: int, specialisation: Optional[str]) -> str:
-+    pieces = [
-+        "nixos",
-+        profile or None,
-+        "generation",
-+        str(generation),
-+        f"specialisation-{specialisation}" if specialisation else None,
-+    ]
-+    return "-".join(p for p in pieces if p) + ".conf"
-+
-+
-+def write_loader_conf(profile: Optional[str], generation: int, specialisation: Optional[str]) -> None:
-     with open("@efiSysMountPoint@/loader/loader.conf.tmp", 'w') as f:
-         if "@timeout@" != "":
-             f.write("timeout @timeout@\n")
--        if profile:
--            f.write("default nixos-%s-generation-%d.conf\n" % (profile, generation))
--        else:
--            f.write("default nixos-generation-%d.conf\n" % (generation))
-+        f.write("default %s\n" % generation_conf_filename(profile, generation, specialisation))
-         if not @editor@:
-             f.write("editor 0\n");
-         f.write("console-mode @consoleMode@\n");
-     os.rename("@efiSysMountPoint@/loader/loader.conf.tmp", "@efiSysMountPoint@/loader/loader.conf")
- 
- 
--def profile_path(profile: Optional[str], generation: int, name: str) -> str:
--    return os.path.realpath("%s/%s" % (system_dir(profile, generation), name))
-+def profile_path(profile: Optional[str], generation: int, specialisation: Optional[str], name: str) -> str:
-+    return os.path.realpath("%s/%s" % (system_dir(profile, generation, specialisation), name))
- 
- 
--def copy_from_profile(profile: Optional[str], generation: int, name: str, dry_run: bool = False) -> str:
--    store_file_path = profile_path(profile, generation, name)
-+def copy_from_profile(profile: Optional[str], generation: int, specialisation: Optional[str], name: str, dry_run: bool = False) -> str:
-+    store_file_path = profile_path(profile, generation, specialisation, name)
-     suffix = os.path.basename(store_file_path)
-     store_dir = os.path.basename(os.path.dirname(store_file_path))
-     efi_file_path = "/efi/nixos/%s-%s.efi" % (store_dir, suffix)
-@@ -95,19 +112,17 @@ def describe_generation(generation_dir: str) -> str:
-     return description
- 
- 
--def write_entry(profile: Optional[str], generation: int, machine_id: str) -> None:
--    kernel = copy_from_profile(profile, generation, "kernel")
--    initrd = copy_from_profile(profile, generation, "initrd")
-+def write_entry(profile: Optional[str], generation: int, specialisation: Optional[str], machine_id: str) -> None:
-+    kernel = copy_from_profile(profile, generation, specialisation, "kernel")
-+    initrd = copy_from_profile(profile, generation, specialisation, "initrd")
-     try:
--        append_initrd_secrets = profile_path(profile, generation, "append-initrd-secrets")
-+        append_initrd_secrets = profile_path(profile, generation, specialisation, "append-initrd-secrets")
-         subprocess.check_call([append_initrd_secrets, "@efiSysMountPoint@%s" % (initrd)])
-     except FileNotFoundError:
-         pass
--    if profile:
--        entry_file = "@efiSysMountPoint@/loader/entries/nixos-%s-generation-%d.conf" % (profile, generation)
--    else:
--        entry_file = "@efiSysMountPoint@/loader/entries/nixos-generation-%d.conf" % (generation)
--    generation_dir = os.readlink(system_dir(profile, generation))
-+    entry_file = "@efiSysMountPoint@/loader/entries/%s" % (
-+        generation_conf_filename(profile, generation, specialisation))
-+    generation_dir = os.readlink(system_dir(profile, generation, specialisation))
-     tmp_path = "%s.tmp" % (entry_file)
-     kernel_params = "init=%s/init " % generation_dir
- 
-@@ -115,6 +130,7 @@ def write_entry(profile: Optional[str], generation: int, machine_id: str) -> Non
-         kernel_params = kernel_params + params_file.read()
-     with open(tmp_path, 'w') as f:
-         f.write(BOOT_ENTRY.format(profile=" [" + profile + "]" if profile else "",
-+                    specialisation=" (%s)" % specialisation if specialisation else "",
-                     generation=generation,
-                     kernel=kernel,
-                     initrd=initrd,
-@@ -133,7 +149,7 @@ def mkdir_p(path: str) -> None:
-             raise
- 
- 
--def get_generations(profile: Optional[str] = None) -> List[Tuple[Optional[str], int]]:
-+def get_generations(profile: Optional[str] = None) -> List[SystemIdentifier]:
-     gen_list = subprocess.check_output([
-         "@nix@/bin/nix-env",
-         "--list-generations",
-@@ -145,10 +161,19 @@ def get_generations(profile: Optional[str] = None) -> List[Tuple[Optional[str],
-     gen_lines.pop()
- 
-     configurationLimit = @configurationLimit@
--    return [ (profile, int(line.split()[0])) for line in gen_lines ][-configurationLimit:]
-+    configurations: List[SystemIdentifier] = [ (profile, int(line.split()[0]), None) for line in gen_lines ]
-+    return configurations[-configurationLimit:]
-+
-+
-+def get_specialisations(profile: Optional[str], generation: int, _: Optional[str]) -> List[SystemIdentifier]:
-+    specialisations_dir = os.path.join(
-+            system_dir(profile, generation, None), "specialisation")
-+    if not os.path.exists(specialisations_dir):
-+        return []
-+    return [(profile, generation, spec) for spec in os.listdir(specialisations_dir)]
- 
- 
--def remove_old_entries(gens: List[Tuple[Optional[str], int]]) -> None:
-+def remove_old_entries(gens: List[SystemIdentifier]) -> None:
-     rex_profile = re.compile("^@efiSysMountPoint@/loader/entries/nixos-(.*)-generation-.*\.conf$")
-     rex_generation = re.compile("^@efiSysMountPoint@/loader/entries/nixos.*-generation-(.*)\.conf$")
-     known_paths = []
-@@ -243,6 +268,8 @@ def main() -> None:
-     for gen in gens:
-         try:
-             write_entry(*gen, machine_id)
-+            for specialisation in get_specialisations(*gen):
-+                write_entry(*specialisation, machine_id)
-             if os.readlink(system_dir(*gen)) == args.default_config:
-                 write_loader_conf(*gen)
-         except OSError as e:
-diff --git a/nixos/tests/systemd-boot.nix b/nixos/tests/systemd-boot.nix
-index 3c93cb82d64..ae3727afaf6 100644
---- a/nixos/tests/systemd-boot.nix
-+++ b/nixos/tests/systemd-boot.nix
-@@ -39,6 +39,29 @@ in
-     '';
-   };
- 
-+  # Check that specialisations create corresponding boot entries.
-+  specialisation = makeTest {
-+    name = "systemd-boot-specialisation";
-+    meta.maintainers = with pkgs.stdenv.lib.maintainers; [ lukegb ];
-+
-+    machine = { pkgs, lib, ... }: {
-+      imports = [ common ];
-+      specialisation.something.configuration = {};
-+    };
-+
-+    testScript = ''
-+      machine.start()
-+      machine.wait_for_unit("multi-user.target")
-+
-+      machine.succeed(
-+          "test -e /boot/loader/entries/nixos-generation-1-specialisation-something.conf"
-+      )
-+      machine.succeed(
-+          "grep -q 'title NixOS (something)' /boot/loader/entries/nixos-generation-1-specialisation-something.conf"
-+      )
-+    '';
-+  };
-+
-   # Boot without having created an EFI entry--instead using default "/EFI/BOOT/BOOTX64.EFI"
-   fallback = makeTest {
-     name = "systemd-boot-fallback";
--- 
-2.33.0
-
diff --git a/third_party/nixpkgs/patches/series b/third_party/nixpkgs/patches/series
index 559815059b..a637d26770 100644
--- a/third_party/nixpkgs/patches/series
+++ b/third_party/nixpkgs/patches/series
@@ -1,5 +1,4 @@
 patch-cherrypy.patch
 pomerium-fix.patch
 pomerium-fix2.patch
-0001-nixos-systemd-boot-create-boot-entries-for-specialis.patch
 pr138359-pomerium-bump.patch