diff --git a/pkgs/tools/misc/completely/Gemfile b/pkgs/tools/misc/completely/Gemfile
new file mode 100644
index 00000000000..bfae9292032
--- /dev/null
+++ b/pkgs/tools/misc/completely/Gemfile
@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'completely'
diff --git a/pkgs/tools/misc/completely/Gemfile.lock b/pkgs/tools/misc/completely/Gemfile.lock
new file mode 100644
index 00000000000..656c96cbc40
--- /dev/null
+++ b/pkgs/tools/misc/completely/Gemfile.lock
@@ -0,0 +1,20 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    colsole (0.8.2)
+    completely (0.5.2)
+      colsole (~> 0.6)
+      mister_bin (~> 0.7.2)
+    docopt (0.6.1)
+    mister_bin (0.7.3)
+      colsole (~> 0.7)
+      docopt (~> 0.6)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  completely
+
+BUNDLED WITH
+   2.4.5
diff --git a/pkgs/tools/misc/completely/default.nix b/pkgs/tools/misc/completely/default.nix
new file mode 100644
index 00000000000..7e0129f6d1b
--- /dev/null
+++ b/pkgs/tools/misc/completely/default.nix
@@ -0,0 +1,21 @@
+{ lib
+, bundlerApp
+, bundlerUpdateScript
+}:
+
+bundlerApp {
+  pname = "completely";
+
+  gemdir = ./.;
+  exes = [ "completely" ];
+
+  passthru.updateScript = bundlerUpdateScript "completely";
+
+  meta = with lib; {
+    description = "Generate bash completion scripts using a simple configuration file";
+    homepage = "https://github.com/DannyBen/completely";
+    license = licenses.mit;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ zendo ];
+  };
+}
diff --git a/pkgs/tools/misc/completely/gemset.nix b/pkgs/tools/misc/completely/gemset.nix
new file mode 100644
index 00000000000..a078a113f6d
--- /dev/null
+++ b/pkgs/tools/misc/completely/gemset.nix
@@ -0,0 +1,44 @@
+{
+  colsole = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1l29sxy4p9jbvcihckxfsyqx98b8xwzd3hjqvdh1zxw8nv5walnp";
+      type = "gem";
+    };
+    version = "0.8.2";
+  };
+  completely = {
+    dependencies = ["colsole" "mister_bin"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0w7cmmsp9m42c8w4j03kr98zy7x7yszw3qsm3ww600dmc0d0xd2b";
+      type = "gem";
+    };
+    version = "0.5.2";
+  };
+  docopt = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0rvlfbb7kzyagncm4zdpcjwrh682zamgf5rcf5qmj0bd6znkgy3k";
+      type = "gem";
+    };
+    version = "0.6.1";
+  };
+  mister_bin = {
+    dependencies = ["colsole" "docopt"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1f51zs9wjpslhdadp8yfx4ij0jj1ya92cbzqlfd2wfr19wdr2jgd";
+      type = "gem";
+    };
+    version = "0.7.3";
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e80b17093ae..72c4bf12ed8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -28497,6 +28497,8 @@ with pkgs;
 
   complete-alias = callPackage ../tools/misc/complete-alias { };
 
+  completely = callPackage ../tools/misc/completely { };
+
   confclerk = libsForQt5.callPackage ../applications/misc/confclerk { };
 
   copyq = qt6Packages.callPackage ../applications/misc/copyq { };