diff --git a/nixos/modules/config/system-path.nix b/nixos/modules/config/system-path.nix
index 93574ffcb2ea..42e40e2af5e4 100644
--- a/nixos/modules/config/system-path.nix
+++ b/nixos/modules/config/system-path.nix
@@ -8,47 +8,41 @@
 }:
 let
 
-  corePackageNames = [
-    "acl"
-    "attr"
-    "bashInteractive" # bash with ncurses support
-    "bzip2"
-    "coreutils-full"
-    "cpio"
-    "curl"
-    "diffutils"
-    "findutils"
-    "gawk"
-    "getent"
-    "getconf"
-    "gnugrep"
-    "gnupatch"
-    "gnused"
-    "gnutar"
-    "gzip"
-    "xz"
-    "less"
-    "libcap"
-    "ncurses"
-    "netcat"
-    "mkpasswd"
-    "procps"
-    "su"
-    "time"
-    "util-linux"
-    "which"
-    "zstd"
-  ];
-  corePackages =
-    (map (
-      n:
-      let
-        pkg = pkgs.${n};
-      in
-      lib.setPrio ((pkg.meta.priority or lib.meta.defaultPriority) + 3) pkg
-    ) corePackageNames)
-    ++ [ pkgs.stdenv.cc.libc ];
-  corePackagesText = "[ ${lib.concatMapStringsSep " " (n: "pkgs.${n}") corePackageNames} ]";
+  requiredPackages =
+    map (pkg: lib.setPrio ((pkg.meta.priority or lib.meta.defaultPriority) + 3) pkg)
+      [
+        pkgs.acl
+        pkgs.attr
+        pkgs.bashInteractive # bash with ncurses support
+        pkgs.bzip2
+        pkgs.coreutils-full
+        pkgs.cpio
+        pkgs.curl
+        pkgs.diffutils
+        pkgs.findutils
+        pkgs.gawk
+        pkgs.stdenv.cc.libc
+        pkgs.getent
+        pkgs.getconf
+        pkgs.gnugrep
+        pkgs.gnupatch
+        pkgs.gnused
+        pkgs.gnutar
+        pkgs.gzip
+        pkgs.xz
+        pkgs.less
+        pkgs.libcap
+        pkgs.ncurses
+        pkgs.netcat
+        config.programs.ssh.package
+        pkgs.mkpasswd
+        pkgs.procps
+        pkgs.su
+        pkgs.time
+        pkgs.util-linux
+        pkgs.which
+        pkgs.zstd
+      ];
 
   defaultPackageNames = [
     "perl"
@@ -86,29 +80,6 @@ in
         '';
       };
 
-      corePackages = lib.mkOption {
-        type = lib.types.listOf lib.types.package;
-        default = corePackages;
-        defaultText = lib.literalMD ''
-          these packages, with their `meta.priority` numerically increased
-          (thus lowering their installation priority):
-
-              ${corePackagesText}
-        '';
-        example = [ ];
-        description = ''
-          Set of core packages for a normal interactive system.
-
-          Only change this if you know what you're doing!
-
-          Like with systemPackages, packages are installed to
-          {file}`/run/current-system/sw`. They are
-          automatically available to all users, and are
-          automatically updated every time you rebuild the system
-          configuration.
-        '';
-      };
-
       defaultPackages = lib.mkOption {
         type = lib.types.listOf lib.types.package;
         default = defaultPackages;
@@ -180,7 +151,7 @@ in
 
   config = {
 
-    environment.systemPackages = config.environment.corePackages ++ config.environment.defaultPackages;
+    environment.systemPackages = requiredPackages ++ config.environment.defaultPackages;
 
     environment.pathsToLink = [
       "/bin"
diff --git a/nixos/modules/programs/bash/bash.nix b/nixos/modules/programs/bash/bash.nix
index b21822369a51..05b41ae619fc 100644
--- a/nixos/modules/programs/bash/bash.nix
+++ b/nixos/modules/programs/bash/bash.nix
@@ -23,23 +23,28 @@ let
 in
 
 {
+  imports = [
+    (lib.mkRemovedOptionModule [ "programs" "bash" "enable" ] "")
+  ];
 
   options = {
 
     programs.bash = {
 
-      enable = lib.mkOption {
-        default = true;
-        description = ''
-          Whenever to configure Bash as an interactive shell.
-          Note that this tries to make Bash the default
-          {option}`users.defaultUserShell`,
-          which in turn means that you might need to explicitly
-          set this variable if you have another shell configured
-          with NixOS.
-        '';
-        type = lib.types.bool;
-      };
+      /*
+        enable = lib.mkOption {
+          default = true;
+          description = ''
+            Whenever to configure Bash as an interactive shell.
+            Note that this tries to make Bash the default
+            {option}`users.defaultUserShell`,
+            which in turn means that you might need to explicitly
+            set this variable if you have another shell configured
+            with NixOS.
+          '';
+          type = lib.types.bool;
+        };
+      */
 
       shellAliases = lib.mkOption {
         default = { };
@@ -124,120 +129,121 @@ in
 
   };
 
-  config = lib.mkIf cfg.enable {
+  config = # lib.mkIf cfg.enable
+    {
 
-    programs.bash = {
+      programs.bash = {
 
-      shellAliases = builtins.mapAttrs (name: lib.mkDefault) cfge.shellAliases;
+        shellAliases = builtins.mapAttrs (name: lib.mkDefault) cfge.shellAliases;
 
-      shellInit = ''
-        if [ -z "$__NIXOS_SET_ENVIRONMENT_DONE" ]; then
-            . ${config.system.build.setEnvironment}
+        shellInit = ''
+          if [ -z "$__NIXOS_SET_ENVIRONMENT_DONE" ]; then
+              . ${config.system.build.setEnvironment}
+          fi
+
+          ${cfge.shellInit}
+        '';
+
+        loginShellInit = cfge.loginShellInit;
+
+        interactiveShellInit = ''
+          # Check the window size after every command.
+          shopt -s checkwinsize
+
+          # Disable hashing (i.e. caching) of command lookups.
+          set +h
+
+          ${cfg.promptInit}
+          ${cfg.promptPluginInit}
+          ${bashAliases}
+
+          ${cfge.interactiveShellInit}
+        '';
+
+      };
+
+      environment.etc.profile.text = ''
+        # /etc/profile: DO NOT EDIT -- this file has been generated automatically.
+        # This file is read for login shells.
+
+        # Only execute this file once per shell.
+        if [ -n "$__ETC_PROFILE_SOURCED" ]; then return; fi
+        __ETC_PROFILE_SOURCED=1
+
+        # Prevent this file from being sourced by interactive non-login child shells.
+        export __ETC_PROFILE_DONE=1
+
+        ${cfg.shellInit}
+        ${cfg.loginShellInit}
+
+        # Read system-wide modifications.
+        if test -f /etc/profile.local; then
+            . /etc/profile.local
         fi
 
-        ${cfge.shellInit}
+        if [ -n "''${BASH_VERSION:-}" ]; then
+            . /etc/bashrc
+        fi
       '';
 
-      loginShellInit = cfge.loginShellInit;
+      environment.etc.bashrc.text = ''
+        # /etc/bashrc: DO NOT EDIT -- this file has been generated automatically.
 
-      interactiveShellInit = ''
-        # Check the window size after every command.
-        shopt -s checkwinsize
+        # Only execute this file once per shell.
+        if [ -n "$__ETC_BASHRC_SOURCED" ] || [ -n "$NOSYSBASHRC" ]; then return; fi
+        __ETC_BASHRC_SOURCED=1
 
-        # Disable hashing (i.e. caching) of command lookups.
-        set +h
+        # If the profile was not loaded in a parent process, source
+        # it.  But otherwise don't do it because we don't want to
+        # clobber overridden values of $PATH, etc.
+        if [ -z "$__ETC_PROFILE_DONE" ]; then
+            . /etc/profile
+        fi
 
-        ${cfg.promptInit}
-        ${cfg.promptPluginInit}
-        ${bashAliases}
+        # We are not always an interactive shell.
+        if [ -n "$PS1" ]; then
+            ${cfg.interactiveShellInit}
+        fi
 
-        ${cfge.interactiveShellInit}
+        # Read system-wide modifications.
+        if test -f /etc/bashrc.local; then
+            . /etc/bashrc.local
+        fi
       '';
 
+      environment.etc.bash_logout.text = ''
+        # /etc/bash_logout: DO NOT EDIT -- this file has been generated automatically.
+
+        # Only execute this file once per shell.
+        if [ -n "$__ETC_BASHLOGOUT_SOURCED" ] || [ -n "$NOSYSBASHLOGOUT" ]; then return; fi
+        __ETC_BASHLOGOUT_SOURCED=1
+
+        ${cfg.logout}
+
+        # Read system-wide modifications.
+        if test -f /etc/bash_logout.local; then
+            . /etc/bash_logout.local
+        fi
+      '';
+
+      # Configuration for readline in bash. We use "option default"
+      # priority to allow user override using both .text and .source.
+      environment.etc.inputrc.source = lib.mkOptionDefault ./inputrc;
+
+      users.defaultUserShell = lib.mkDefault pkgs.bashInteractive;
+
+      environment.pathsToLink = lib.optionals cfg.completion.enable [
+        "/etc/bash_completion.d"
+        "/share/bash-completion"
+      ];
+
+      environment.shells = [
+        "/run/current-system/sw/bin/bash"
+        "/run/current-system/sw/bin/sh"
+        "${pkgs.bashInteractive}/bin/bash"
+        "${pkgs.bashInteractive}/bin/sh"
+      ];
+
     };
 
-    environment.etc.profile.text = ''
-      # /etc/profile: DO NOT EDIT -- this file has been generated automatically.
-      # This file is read for login shells.
-
-      # Only execute this file once per shell.
-      if [ -n "$__ETC_PROFILE_SOURCED" ]; then return; fi
-      __ETC_PROFILE_SOURCED=1
-
-      # Prevent this file from being sourced by interactive non-login child shells.
-      export __ETC_PROFILE_DONE=1
-
-      ${cfg.shellInit}
-      ${cfg.loginShellInit}
-
-      # Read system-wide modifications.
-      if test -f /etc/profile.local; then
-          . /etc/profile.local
-      fi
-
-      if [ -n "''${BASH_VERSION:-}" ]; then
-          . /etc/bashrc
-      fi
-    '';
-
-    environment.etc.bashrc.text = ''
-      # /etc/bashrc: DO NOT EDIT -- this file has been generated automatically.
-
-      # Only execute this file once per shell.
-      if [ -n "$__ETC_BASHRC_SOURCED" ] || [ -n "$NOSYSBASHRC" ]; then return; fi
-      __ETC_BASHRC_SOURCED=1
-
-      # If the profile was not loaded in a parent process, source
-      # it.  But otherwise don't do it because we don't want to
-      # clobber overridden values of $PATH, etc.
-      if [ -z "$__ETC_PROFILE_DONE" ]; then
-          . /etc/profile
-      fi
-
-      # We are not always an interactive shell.
-      if [ -n "$PS1" ]; then
-          ${cfg.interactiveShellInit}
-      fi
-
-      # Read system-wide modifications.
-      if test -f /etc/bashrc.local; then
-          . /etc/bashrc.local
-      fi
-    '';
-
-    environment.etc.bash_logout.text = ''
-      # /etc/bash_logout: DO NOT EDIT -- this file has been generated automatically.
-
-      # Only execute this file once per shell.
-      if [ -n "$__ETC_BASHLOGOUT_SOURCED" ] || [ -n "$NOSYSBASHLOGOUT" ]; then return; fi
-      __ETC_BASHLOGOUT_SOURCED=1
-
-      ${cfg.logout}
-
-      # Read system-wide modifications.
-      if test -f /etc/bash_logout.local; then
-          . /etc/bash_logout.local
-      fi
-    '';
-
-    # Configuration for readline in bash. We use "option default"
-    # priority to allow user override using both .text and .source.
-    environment.etc.inputrc.source = lib.mkOptionDefault ./inputrc;
-
-    users.defaultUserShell = lib.mkDefault pkgs.bashInteractive;
-
-    environment.pathsToLink = lib.optionals cfg.completion.enable [
-      "/etc/bash_completion.d"
-      "/share/bash-completion"
-    ];
-
-    environment.shells = [
-      "/run/current-system/sw/bin/bash"
-      "/run/current-system/sw/bin/sh"
-      "${pkgs.bashInteractive}/bin/bash"
-      "${pkgs.bashInteractive}/bin/sh"
-    ];
-
-  };
-
 }
diff --git a/nixos/modules/programs/fuse.nix b/nixos/modules/programs/fuse.nix
index 9096ce7812b4..6d225089f33d 100644
--- a/nixos/modules/programs/fuse.nix
+++ b/nixos/modules/programs/fuse.nix
@@ -1,9 +1,4 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}:
+{ config, lib, ... }:
 
 let
   cfg = config.programs.fuse;
@@ -12,10 +7,6 @@ in
   meta.maintainers = with lib.maintainers; [ ];
 
   options.programs.fuse = {
-    enable = lib.mkEnableOption "fuse" // {
-      default = true;
-    };
-
     mountMax = lib.mkOption {
       # In the C code it's an "int" (i.e. signed and at least 16 bit), but
       # negative numbers obviously make no sense:
@@ -36,30 +27,10 @@ in
     };
   };
 
-  config = lib.mkIf cfg.enable {
-    environment.systemPackages = [
-      pkgs.fuse
-      pkgs.fuse3
-    ];
-
-    security.wrappers =
-      let
-        mkSetuidRoot = source: {
-          setuid = true;
-          owner = "root";
-          group = "root";
-          inherit source;
-        };
-      in
-      {
-        fusermount = mkSetuidRoot "${lib.getBin pkgs.fuse}/bin/fusermount";
-        fusermount3 = mkSetuidRoot "${lib.getBin pkgs.fuse3}/bin/fusermount3";
-      };
-
+  config = {
     environment.etc."fuse.conf".text = ''
       ${lib.optionalString (!cfg.userAllowOther) "#"}user_allow_other
       mount_max = ${builtins.toString cfg.mountMax}
     '';
-
   };
 }
diff --git a/nixos/modules/programs/ssh.nix b/nixos/modules/programs/ssh.nix
index cbf1800e8e3b..a950a1c12b12 100644
--- a/nixos/modules/programs/ssh.nix
+++ b/nixos/modules/programs/ssh.nix
@@ -335,8 +335,6 @@ in
       }
     );
 
-    environment.corePackages = [ cfg.package ];
-
     # SSH configuration. Slight duplication of the sshd_config
     # generation in the sshd service.
     environment.etc."ssh/ssh_config".text = ''
diff --git a/nixos/modules/security/wrappers/default.nix b/nixos/modules/security/wrappers/default.nix
index edbed8120e24..cc1810c534bc 100644
--- a/nixos/modules/security/wrappers/default.nix
+++ b/nixos/modules/security/wrappers/default.nix
@@ -266,6 +266,8 @@ in
       in
       {
         # These are mount related wrappers that require the +s permission.
+        fusermount = mkSetuidRoot "${lib.getBin pkgs.fuse}/bin/fusermount";
+        fusermount3 = mkSetuidRoot "${lib.getBin pkgs.fuse3}/bin/fusermount3";
         mount = mkSetuidRoot "${lib.getBin pkgs.util-linux}/bin/mount";
         umount = mkSetuidRoot "${lib.getBin pkgs.util-linux}/bin/umount";
       };
diff --git a/nixos/modules/system/activation/activation-script.nix b/nixos/modules/system/activation/activation-script.nix
index dd3973c8073e..f56be5f71f18 100644
--- a/nixos/modules/system/activation/activation-script.nix
+++ b/nixos/modules/system/activation/activation-script.nix
@@ -317,7 +317,7 @@ in
       source ${config.system.build.earlyMountScript}
     '';
 
-    systemd.user = lib.mkIf config.system.activatable {
+    systemd.user = {
       services.nixos-activation = {
         description = "Run user-specific NixOS activation";
         script = config.system.userActivationScripts.script;
diff --git a/nixos/modules/system/boot/kernel.nix b/nixos/modules/system/boot/kernel.nix
index b19e3ac5c787..3a7f0d19db94 100644
--- a/nixos/modules/system/boot/kernel.nix
+++ b/nixos/modules/system/boot/kernel.nix
@@ -414,9 +414,7 @@ in
 
           ln -s ${initrdPath} $out/initrd
 
-          ${optionalString (config.boot.initrd.secrets != { }) ''
-            ln -s ${config.system.build.initialRamdiskSecretAppender}/bin/append-initrd-secrets $out
-          ''}
+          ln -s ${config.system.build.initialRamdiskSecretAppender}/bin/append-initrd-secrets $out
 
           ln -s ${config.hardware.firmware}/lib/firmware $out/firmware
         '';
diff --git a/nixos/modules/system/boot/kexec.nix b/nixos/modules/system/boot/kexec.nix
index 9a4818d874dd..580ccab5e29e 100644
--- a/nixos/modules/system/boot/kexec.nix
+++ b/nixos/modules/system/boot/kexec.nix
@@ -1,22 +1,7 @@
-{
-  config,
-  pkgs,
-  lib,
-  ...
-}:
+{ pkgs, lib, ... }:
 
-let
-  cfg = config.boot.kexec;
-in
 {
-  options.boot.kexec = {
-    enable = lib.mkEnableOption "kexec" // {
-      default = lib.meta.availableOn pkgs.stdenv.hostPlatform pkgs.kexec-tools;
-      defaultText = lib.literalExpression ''lib.meta.availableOn pkgs.stdenv.hostPlatform pkgs.kexec-tools'';
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf (lib.meta.availableOn pkgs.stdenv.hostPlatform pkgs.kexec-tools) {
     environment.systemPackages = [ pkgs.kexec-tools ];
 
     systemd.services.prepare-kexec = {
diff --git a/nixos/modules/tasks/filesystems.nix b/nixos/modules/tasks/filesystems.nix
index ad27284d6991..5e52591a560b 100644
--- a/nixos/modules/tasks/filesystems.nix
+++ b/nixos/modules/tasks/filesystems.nix
@@ -461,7 +461,13 @@ in
     # Add the mount helpers to the system path so that `mount' can find them.
     system.fsPackages = [ pkgs.dosfstools ];
 
-    environment.systemPackages = config.system.fsPackages;
+    environment.systemPackages =
+      with pkgs;
+      [
+        fuse3
+        fuse
+      ]
+      ++ config.system.fsPackages;
 
     environment.etc.fstab.text =
       let
diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 24781f230e75..6f4ef6492026 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -1767,19 +1767,17 @@ in
       text = cfg.hostName + "\n";
     };
 
-    environment.corePackages = lib.mkOptionDefault (
-      [
-        pkgs.host
-        pkgs.hostname-debian
-        pkgs.iproute2
-        pkgs.iputils
-      ]
-      ++ optionals config.networking.wireless.enable [
-        pkgs.wirelesstools # FIXME: obsolete?
-        pkgs.iw
-      ]
-      ++ bridgeStp
-    );
+    environment.systemPackages = [
+      pkgs.host
+      pkgs.hostname-debian
+      pkgs.iproute2
+      pkgs.iputils
+    ]
+    ++ optionals config.networking.wireless.enable [
+      pkgs.wirelesstools # FIXME: obsolete?
+      pkgs.iw
+    ]
+    ++ bridgeStp;
 
     # Wake-on-LAN configuration is shared by the scripted and networkd backends.
     systemd.network.links = pipe interfaces [