Merge branch 'copy_files_mixin' into nix

nix/configuration/configuration.nix

@@ -2,7 +2,6 @@
   config,
   lib,
   pkgs,
-  home-manager,
   ...
 }:
 
@@ -74,6 +73,7 @@
     ./roles/zfs
     ./roles/zrepl
     ./roles/zsh
+    ./util/install_files
     ./util/unfree_polyfill
   ];
 
@@ -122,21 +122,6 @@
     ];
   };
   users.groups.talexander.gid = 11235;
-  home-manager.users.talexander =
-    { pkgs, ... }:
-    {
-      # The state version is required and should stay at the version you
-      # originally installed.
-      home.stateVersion = "24.11";
-    };
-
-  home-manager.users.root =
-    { pkgs, ... }:
-    {
-      # The state version is required and should stay at the version you
-      # originally installed.
-      home.stateVersion = "24.11";
-    };
 
   # Automatic garbage collection
   nix.gc = lib.mkIf (!config.me.buildingIso) {

nix/configuration/flake.lock

@@ -147,26 +147,6 @@
         "type": "github"
       }
     },
-    "home-manager": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1751549056,
-        "narHash": "sha256-miKaJ4SFNxhZ/WVDADae2jNd9zka5bV9hKmXspAzvxo=",
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "rev": "1fa73bb2cc39e250eb01e511ae6ac83bfbf9f38c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "type": "github"
-      }
-    },
     "impermanence": {
       "locked": {
         "lastModified": 1737831083,
@@ -303,7 +283,6 @@
       "inputs": {
         "ansible-sshjail": "ansible-sshjail",
         "disko": "disko",
-        "home-manager": "home-manager",
         "impermanence": "impermanence",
         "lanzaboote": "lanzaboote",
         "nixpkgs": "nixpkgs",

nix/configuration/flake.nix

@@ -45,8 +45,6 @@
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     nixpkgs-dda3dcd3f.url = "github:NixOS/nixpkgs/dda3dcd3fe03e991015e9a74b22d35950f264a54";
     nixpkgs-unoptimized.url = "github:NixOS/nixpkgs/nixos-unstable";
-    home-manager.url = "github:nix-community/home-manager";
-    home-manager.inputs.nixpkgs.follows = "nixpkgs";
     lanzaboote = {
       url = "github:nix-community/lanzaboote/v0.4.2";
 
@@ -78,7 +76,6 @@
       nixpkgs-unoptimized,
       nixpkgs-dda3dcd3f,
       impermanence,
-      home-manager,
       lanzaboote,
       zsh-histdb,
       ansible-sshjail,
@@ -99,13 +96,8 @@
         };
         modules = [
           impermanence.nixosModules.impermanence
-          home-manager.nixosModules.home-manager
           lanzaboote.nixosModules.lanzaboote
           inputs.disko.nixosModules.disko
-          {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-          }
           {
             nixpkgs.overlays = [
               zsh-histdb.overlays.default

nix/configuration/roles/alacritty/default.nix

@@ -24,13 +24,11 @@
           xdg-utils # for xdg-open
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/alacritty/alacritty.toml" = {
-          {
+            source = ./files/alacritty.toml;
-            home.file.".config/alacritty/alacritty.toml" = {
-              source = ./files/alacritty.toml;
-            };
           };
+        };
       })
     ]
   );

nix/configuration/roles/emacs/default.nix

@@ -141,14 +141,12 @@ in
           })
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/emacs" = {
-          {
+            source = ./files/emacs;
-            home.file.".config/emacs" = {
+            recursive = true;
-              source = ./files/emacs;
-              recursive = true;
-            };
           };
+        };
       })
       (lib.mkIf (config.me.emacs_flavor == "plainmacs") {
         nixpkgs.overlays = [

nix/configuration/roles/git/default.nix

@@ -36,13 +36,11 @@ in
       ];
     }
     (lib.mkIf (config.me.git.config != null) {
-      home-manager.users.talexander =
+      me.install.user.talexander.file = {
-        { pkgs, ... }:
+        ".gitconfig" = {
-        {
+          source = config.me.git.config;
-          home.file.".gitconfig" = {
-            source = config.me.git.config;
-          };
         };
+      };
     })
     (lib.mkIf (config.me.graphical) {
       nixpkgs.overlays = [

nix/configuration/roles/gpg/default.nix

@@ -57,14 +57,11 @@ in
         #   disable-ccid = true;
         # };
 
-        # .gnupg/scdaemon.conf
+        me.install.user.talexander.file = {
-        home-manager.users.talexander =
+          ".gnupg/scdaemon.conf" = {
-          { pkgs, ... }:
+            source = ./files/scdaemon.conf;
-          {
-            home.file.".gnupg/scdaemon.conf" = {
-              source = ./files/scdaemon.conf;
-            };
           };
+        };
 
         # programs.gnupg.dirmngr.enable = true;
         programs.gnupg.agent = {

nix/configuration/roles/kanshi/default.nix

@@ -41,15 +41,11 @@ in
           exec_kanshi
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/kanshi/config" = {
-          {
+            source = ./files/config_kanshi;
-            home.file = {
-              ".config/kanshi/config" = {
-                source = ./files/config_kanshi;
-              };
-            };
           };
+        };
       })
     ]
   );

nix/configuration/roles/kodi/default.nix

@@ -78,21 +78,13 @@
           };
         };
 
-        home-manager.users.kodi =
+        # home.file.".kodi/userdata/mediasources.xml".source = ./files/mediasources.xml;
-          { pkgs, ... }:
-          {
-            # home.file.".kodi/userdata/mediasources.xml".source = ./files/mediasources.xml;
 
-            # home.file.".kodi/userdata/addon_data/peripheral.joystick/resources/buttonmaps/xml/linux/DualSense_Wireless_Controller_13b_8a.xml".source =
+        # home.file.".kodi/userdata/addon_data/peripheral.joystick/resources/buttonmaps/xml/linux/DualSense_Wireless_Controller_13b_8a.xml".source =
-            #   ./files/DualSense_Wireless_Controller_13b_8a.xml;
+        #   ./files/DualSense_Wireless_Controller_13b_8a.xml;
 
-            # TODO: Maybe .kodi/userdata/sources.xml
+        # TODO: Maybe .kodi/userdata/sources.xml
-            # TODO: ./userdata/guisettings.xml:303:    <setting id="filecache.memorysize">128</setting>
+        # TODO: ./userdata/guisettings.xml:303:    <setting id="filecache.memorysize">128</setting>
-
-            # The state version is required and should stay at the version you
-            # originally installed.
-            home.stateVersion = "24.11";
-          };
       })
     ]
   );

nix/configuration/roles/media/default.nix

@@ -52,13 +52,11 @@ in
           imv
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/mpv/mpv.conf" = {
-          {
+            source = ./files/mpv.conf;
-            home.file.".config/mpv/mpv.conf" = {
-              source = ./files/mpv.conf;
-            };
           };
+        };
       })
       (lib.mkIf (config.me.graphics_card_type == "amd" || config.me.graphics_card_type == "intel") {
         environment.systemPackages = with pkgs; [

nix/configuration/roles/pcsx2/default.nix

@@ -82,13 +82,11 @@
           };
         };
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/PCSX2/inis/PCSX2.ini" = {
-          {
+            source = ./files/PCSX2.ini;
-            home.file.".config/PCSX2/inis/PCSX2.ini" = {
-              source = ./files/PCSX2.ini;
-            };
           };
+        };
       })
     ]
   );

nix/configuration/roles/rpcs3/default.nix

@@ -70,28 +70,26 @@ in
           }
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/rpcs3/config.yml" = lib.mkIf (config.me.rpcs3.config != null) {
-          {
+            source = rpcs3_config_yaml;
-            home.file.".config/rpcs3/config.yml" = lib.mkIf (config.me.rpcs3.config != null) {
-              source = rpcs3_config_yaml;
-            };
-            home.file.".config/rpcs3/GuiConfigs/CurrentSettings.ini" = {
-              source = ./files/CurrentSettings.ini;
-            };
-            home.file.".config/rpcs3/custom_configs/config_BLUS30443.yml" = {
-              # Demon's Souls per-game config.
-              source = ./files/config_BLUS30443.yml;
-            };
-            home.file.".config/rpcs3/patches/patch.yml" = {
-              # All of the available patches.
-              source = ./files/patch.yml;
-            };
-            home.file.".config/rpcs3/patch_config.yml" = {
-              # Patches that I have enabled.
-              source = ./files/patch_config.yml;
-            };
           };
+          ".config/rpcs3/GuiConfigs/CurrentSettings.ini" = {
+            source = ./files/CurrentSettings.ini;
+          };
+          ".config/rpcs3/custom_configs/config_BLUS30443.yml" = {
+            # Demon's Souls per-game config.
+            source = ./files/config_BLUS30443.yml;
+          };
+          ".config/rpcs3/patches/patch.yml" = {
+            # All of the available patches.
+            source = ./files/patch.yml;
+          };
+          ".config/rpcs3/patch_config.yml" = {
+            # Patches that I have enabled.
+            source = ./files/patch_config.yml;
+          };
+        };
 
         environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
           hideMounts = true;

nix/configuration/roles/rust/default.nix

@@ -48,18 +48,14 @@ in
           # ? cargo-public-api
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".cargo/config.toml" = {
-          {
+            source = ./files/cargo_config.toml;
-            home.file = {
-              ".cargo/config.toml" = {
-                source = ./files/cargo_config.toml;
-              };
-              ".rustup/settings.toml" = {
-                source = ./files/rustup_settings.toml;
-              };
-            };
           };
+          ".rustup/settings.toml" = {
+            source = ./files/rustup_settings.toml;
+          };
+        };
 
         environment.persistence."/state" = lib.mkIf (!config.me.buildingIso) {
           hideMounts = true;

nix/configuration/roles/shadps4/default.nix

@@ -24,13 +24,11 @@
           shadps4
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".local/share/shadPS4/config.toml" = {
-          {
+            source = ./files/config.toml;
-            home.file.".local/share/shadPS4/config.toml" = {
-              source = ./files/config.toml;
-            };
           };
+        };
 
         environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
           hideMounts = true;

nix/configuration/roles/shikane/default.nix

@@ -36,15 +36,11 @@ in
           exec_shikane
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/shikane/config.toml" = {
-          {
+            source = ./files/config.toml;
-            home.file = {
-              ".config/shikane/config.toml" = {
-                source = ./files/config.toml;
-              };
-            };
           };
+        };
       })
     ]
   );

nix/configuration/roles/ssh/default.nix

@@ -27,19 +27,14 @@
     };
   };
 
-  home-manager.users.talexander =
+  me.install.user.root.file = {
-    { pkgs, ... }:
+    ".ssh/config" = {
-    {
+      source = ./files/ssh_config_root;
-      home.file.".ssh/config" = {
-        source = ./files/ssh_config;
-      };
     };
-
+  };
-  home-manager.users.root =
+  me.install.user.talexander.file = {
-    { pkgs, ... }:
+    ".ssh/config" = {
-    {
+      source = ./files/ssh_config;
-      home.file.".ssh/config" = {
-        source = ./files/ssh_config_root;
-      };
     };
+  };
 }

nix/configuration/roles/sway/default.nix

@@ -376,26 +376,18 @@ in
       };
     };
 
-    home-manager.users.talexander =
+    me.install.user.talexander.file = {
-      { pkgs, ... }:
+      ".config/mimeapps.list" = {
-      {
+        # Configure default programs (for example, default browser)
-        home.file = {
+        source = ./files/mimeapps.list;
-          # Configure default programs (for example, default browser)
-          ".config/mimeapps.list" = {
-            source = ./files/mimeapps.list;
-          };
-        };
-        home.file = {
-          ".config/gtk-3.0/settings.ini" = {
-            source = ./files/settings.ini;
-          };
-        };
-        home.file = {
-          ".icons/default" = {
-            source = "${pkgs.adwaita-icon-theme}/share/icons/Adwaita";
-          };
-        };
       };
+      ".config/gtk-3.0/settings.ini" = {
+        source = ./files/settings.ini;
+      };
+      ".icons/default" = {
+        source = "${pkgs.adwaita-icon-theme}/share/icons/Adwaita";
+      };
+    };
 
     # For mounting drives in pcmanfm
     services.gvfs.enable = true;

nix/configuration/roles/vscode/default.nix

@@ -48,16 +48,14 @@
           })
         ];
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/Code/User/settings.json" = {
-          {
+            source = ./files/settings.json;
-            home.file.".config/Code/User/settings.json" = {
-              source = ./files/settings.json;
-            };
-            home.file.".config/Code/User/keybindings.json" = {
-              source = ./files/keybindings.json;
-            };
           };
+          ".config/Code/User/keybindings.json" = {
+            source = ./files/keybindings.json;
+          };
+        };
       })
     ]
   );

nix/configuration/roles/waybar/default.nix

@@ -113,18 +113,14 @@ in
 
         services.upower.enable = true; # for battery
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".config/waybar/config" = {
-          {
+            source = ./files/waybar_config.json;
-            home.file = {
-              ".config/waybar/config" = {
-                source = ./files/waybar_config.json;
-              };
-              ".config/waybar/style.css" = {
-                source = ./files/style.css;
-              };
-            };
           };
+          ".config/waybar/style.css" = {
+            source = ./files/style.css;
+          };
+        };
       })
     ]
   );

nix/configuration/roles/zsh/default.nix

@@ -90,13 +90,11 @@ in
           enable = true;
         };
 
-        home-manager.users.talexander =
+        me.install.user.talexander.file = {
-          { pkgs, ... }:
+          ".zshrc" = {
-          {
+            source = "${zshrc}";
-            home.file.".zshrc" = {
-              source = "${zshrc}";
-            };
           };
+        };
 
         environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
           hideMounts = true;

nix/configuration/util/install_files/default.nix

@@ -0,0 +1,333 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.me.install;
+  inherit (lib)
+    filter
+    attrNames
+    ;
+
+  get_shell_values =
+    target:
+    let
+      homedir = config.users.users."${target.username}".home;
+      group = config.users.users."${target.username}".group;
+    in
+    {
+      source = lib.strings.escapeShellArg "${target.source}";
+      destination = lib.strings.escapeShellArg "${homedir}/${target.target}";
+      mode = lib.strings.escapeShellArg "${target.mode}";
+      dir_mode = lib.strings.escapeShellArg "${target.dir_mode}";
+      username = lib.strings.escapeShellArg "${target.username}";
+      group = lib.strings.escapeShellArg "${group}";
+    };
+  install_user_file =
+    let
+      constructors = {
+        "overwrite" = install_user_file_overwrite;
+        "symlink" = install_user_file_symlink;
+      };
+    in
+    stage: target: (constructors."${target.method}"."${stage}" target);
+  install_user_file_overwrite = {
+    "check" = (target: "");
+    "install" = (
+      target:
+      let
+        inherit (get_shell_values target)
+          source
+          destination
+          mode
+          dir_mode
+          username
+          group
+          ;
+        flags = lib.strings.concatStringsSep " " [
+          (if mode != "" then "-m ${mode}" else "")
+          (if username != "" then "-o ${username}" else "")
+          (if group != "" then "-g ${group}" else "")
+        ];
+        dir_flags = lib.strings.concatStringsSep " " [
+          (if dir_mode != "" then "-m ${dir_mode}" else "")
+          (if username != "" then "-o ${username}" else "")
+          (if group != "" then "-g ${group}" else "")
+        ];
+      in
+      if target.recursive then
+        [
+          ''
+            find ${source} -type f -print0 | while read -r -d "" file; do
+                relative_path=$(realpath -s --relative-to ${source} "$file")
+                full_dest=${destination}/"$relative_path"
+                create_containing_directories "$full_dest" ${dir_flags}
+                $DRY_RUN_CMD install $VERBOSE_ARG --compare ${flags} "$file" "$full_dest"
+            done
+          ''
+        ]
+      else
+        [
+          ''
+            create_containing_directories ${destination} ${dir_flags}
+            $DRY_RUN_CMD install $VERBOSE_ARG --compare ${flags} ${source} ${destination}
+          ''
+        ]
+    );
+    "uninstall" = (
+      target:
+      let
+        inherit (get_shell_values target)
+          source
+          destination
+          ;
+      in
+      if target.recursive then
+        [
+          ''
+            find ${source} -type f -print0 | while read -r -d "" file; do
+                relative_path=$(realpath -s --relative-to ${source} "$file")
+                full_dest=${destination}/"$relative_path"
+                $DRY_RUN_CMD echo rm -f "$full_dest"
+            done
+          ''
+        ]
+      else
+        [
+          ''
+            $DRY_RUN_CMD echo rm -f ${destination}
+          ''
+        ]
+    );
+  };
+  install_user_file_symlink = {
+    "check" = (target: "");
+    "install" = (
+      target:
+      let
+        inherit (get_shell_values target)
+          source
+          destination
+          mode
+          dir_mode
+          username
+          group
+          ;
+        owner = lib.strings.concatStringsSep ":" (
+          filter (val: val != "") [
+            username
+            group
+          ]
+        );
+        dir_flags = lib.strings.concatStringsSep " " [
+          (if dir_mode != "" then "-m ${dir_mode}" else "")
+          (if username != "" then "-o ${username}" else "")
+          (if group != "" then "-g ${group}" else "")
+        ];
+      in
+      if target.recursive then
+        [
+          ''
+            find ${source} -type f -print0 | while read -r -d "" file; do
+                relative_path=$(realpath -s --relative-to ${source} "$file")
+                full_dest=${destination}/"$relative_path"
+                create_containing_directories "$full_dest" ${dir_flags}
+                $DRY_RUN_CMD ln $VERBOSE_ARG -s "$file" "$full_dest"
+                $DRY_RUN_CMD chown $VERBOSE_ARG -h ${owner} "$full_dest"
+            done
+          ''
+        ]
+      else
+        [
+          ''
+            create_containing_directories ${destination} ${dir_flags}
+            $DRY_RUN_CMD ln $VERBOSE_ARG -s ${source} ${destination}
+            $DRY_RUN_CMD chown $VERBOSE_ARG -h ${owner} ${destination}
+          ''
+        ]
+    );
+    "uninstall" = (
+      target:
+      let
+        inherit (get_shell_values target)
+          source
+          destination
+          ;
+      in
+      if target.recursive then
+        [
+          ''
+            find ${source} -type f -print0 | while read -r -d "" file; do
+                relative_path=$(realpath -s --relative-to ${source} "$file")
+                full_dest=${destination}/"$relative_path"
+                $DRY_RUN_CMD echo rm -f "$full_dest"
+            done
+          ''
+        ]
+      else
+        [
+          ''
+            $DRY_RUN_CMD echo rm -f ${destination}
+          ''
+        ]
+    );
+  };
+in
+{
+  imports = [ ];
+
+  options.me.install = {
+    user = lib.mkOption {
+      type = lib.types.attrsOf (
+        lib.types.submodule (
+          { name, config, ... }:
+          let
+            username = name;
+          in
+          {
+            options = {
+              enable = lib.mkOption {
+                type = lib.types.bool;
+                default = true;
+                defaultText = "enable";
+                example = lib.literalExpression false;
+                description = "Whether we want to install files in this user's home directory.";
+              };
+
+              file = lib.mkOption {
+                type = lib.types.attrsOf (
+                  lib.types.submodule (
+                    { name, config, ... }:
+                    let
+                      path = name;
+                    in
+                    {
+                      options = {
+                        enable = lib.mkOption {
+                          type = lib.types.bool;
+                          default = true;
+                          defaultText = "enable";
+                          example = lib.literalExpression false;
+                          description = "Whether we want to install this file in this user's home directory.";
+                        };
+                        username = lib.mkOption {
+                          type = lib.types.str;
+                          defaultText = "username";
+                          example = "root";
+                          description = "The username for the user whose home directory will contain the file.";
+                        };
+                        target = lib.mkOption {
+                          type = lib.types.str;
+                          defaultText = "target";
+                          example = ".local/share/foo/bar.txt";
+                          description = "The path where the file should be written.";
+                        };
+                        method = lib.mkOption {
+                          type = lib.types.enum [
+                            "symlink"
+                            "overwrite"
+                            # "bind_mount" TODO: for directories?
+                          ];
+                          default = "symlink";
+                          defaultText = "me.install.file.‹path›.method";
+                          example = "overwrite";
+                          description = "The way in which the file should be installed.";
+                        };
+                        mode = lib.mkOption {
+                          type = lib.types.str;
+                          default = "0444";
+                          defaultText = "me.install.file.‹path›.mode";
+                          example = "0750";
+                          description = "The read, write, execute permission flags.";
+                        };
+                        dir_mode = lib.mkOption {
+                          type = lib.types.str;
+                          default = "0755";
+                          defaultText = "dir_mode";
+                          example = "0755";
+                          description = "The read, write, execute permission flags for any parent directories that need to be created.";
+                        };
+                        source = lib.mkOption {
+                          type = lib.types.path;
+                          defaultText = "me.install.file.‹path›.source";
+                          example = ./files/foo.txt;
+                          description = "The source file to install into the destination.";
+                        };
+                        recursive = lib.mkOption {
+                          type = lib.types.bool;
+                          default = false;
+                          defaultText = "recursive";
+                          example = lib.literalExpression false;
+                          description = "Whether we want to recurse through the directory doing individual installs for each file.";
+                        };
+                      };
+
+                      config = {
+                        username = lib.mkDefault username;
+                        target = lib.mkDefault path;
+                      };
+                    }
+                  )
+                );
+              };
+            };
+          }
+        )
+      );
+    };
+  };
+
+  config =
+    let
+      all_users = builtins.map (username: cfg.user."${username}") (attrNames cfg.user);
+      enabled_users = filter (user: user.enable) all_users;
+      all_file_targets = lib.flatten (
+        builtins.map (user: (builtins.map (path: user.file."${path}") (attrNames user.file))) enabled_users
+      );
+      enabled_file_targets = filter (target: target.enable) all_file_targets;
+      check_commands = lib.flatten (builtins.map (install_user_file "check") enabled_file_targets);
+      install_commands = lib.flatten (builtins.map (install_user_file "install") enabled_file_targets);
+      uninstall_commands = lib.flatten (
+        builtins.map (install_user_file "uninstall") enabled_file_targets
+      );
+    in
+    {
+      systemd.services.me-install-file = {
+        enable = true;
+        description = "me-install-file";
+        wantedBy = [ "multi-user.target" ];
+        wants = [ "multi-user.target" ];
+        before = [ "multi-user.target" ];
+        # path = with pkgs; [
+        #   zfs
+        # ];
+        unitConfig.DefaultDependencies = "no";
+        serviceConfig = {
+          Type = "oneshot";
+          RemainAfterExit = "yes";
+        };
+        script =
+          ''
+            set -o pipefail
+            IFS=$'\n\t'
+            source ${./files/lib.bash}
+          ''
+          + (lib.strings.concatStringsSep "\n" (
+            [
+            ]
+            ++ check_commands
+            ++ install_commands
+          ));
+        preStop =
+          ''
+            set -o pipefail
+            IFS=$'\n\t'
+            source ${./files/lib.bash}
+          ''
+          + (lib.strings.concatStringsSep "\n" uninstall_commands);
+      };
+    };
+}

nix/configuration/util/install_files/files/lib.bash

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+#
+
+############## Setup #########################
+
+function die {
+    local status_code="$1"
+    shift
+    (>&2 echo "${@}")
+    exit "$status_code"
+}
+
+function log {
+    (>&2 echo "${@}")
+}
+
+############## Program #########################
+
+function create_containing_directories {
+    local full_dest="$1"
+    shift 1
+    local dirs_to_create=()
+    local containing_directory="$full_dest"
+    while true; do
+        containing_directory=$(dirname "$containing_directory")
+        if [ -e "$containing_directory" ] || [ "$containing_directory" = "/" ]; then
+            break
+        fi
+        dirs_to_create+=($containing_directory)
+    done
+
+    for (( idx=${#dirs_to_create[@]}-1 ; idx>=0 ; idx-- )) ; do
+        local containing_directory="${dirs_to_create[idx]}"
+        log "Creating $containing_directory"
+        $DRY_RUN_CMD install $VERBOSE_ARG -d "${@}" "$containing_directory"
+    done
+
+}