diff --git a/README.md b/README.md
index 7b5985e..29ba9b0 100644
--- a/README.md
+++ b/README.md
@@ -69,25 +69,93 @@ The sections below list what each template includes. In all cases, you're free t
 
 - [Gleam] 0.22.1
 
+### [`java`](./java)
+
+- [Java] 17.0.3
+- [Maven] 3.8.5
+- [Gradle] 7.5
+- [Ant] 1.10.11
+
+### [`kotlin`](./kotlin/)
+
+- [Kotlin] 1.7.10-release-333
+- [Gradle] 7.5
+
+### [`nix`](./nix/)
+
+- [Cachix]
+- [dhall-to-nix] 1.1.23
+- [lorri]
+- [niv]
+- [nixfmt]
+- [statix]
+- [vulnix]
+
+### [`node`](./node/)
+
+- [Node.js][node] 18.7.0
+- [pnpm] 7.3.0
+- [Yarn] 1.22.19
+
+### [`protobuf`](./protobuf/)
+
+- The [Buf CLI][buf] 1.7.0
+- [protoc][protobuf] 3.19.4
+
+### [`rust`](./rust/)
+
+- [Rust], including [cargo], [Clippy], and the other standard tools. The Rust version is determined as follows, in order:
+
+  - From the `rust-toolchain.toml` file if present
+  - From the `rust-toolchain` file if present
+  - Version 1.6.2 if neither is present
+
+- [rust-analyzer] 2022-07-11
+
+### [`scala`](./scala/)
+
+- [Scala] 3.1.0 ([Java] 17.0.3)
+- [sbt] 1.6.2
+
+### [`zig`](./zig/)
+
+- [Zig] 0.9.1
+
 ## Code organization
 
 All of the templates have only the root [flake](./flake.nix) as a flake input. That root flake provides a common revision of [Nixpkgs] and [`flake-utils`][flake-utils] to all the templates.
 
+[ant]: https://ant.apache.org
+[buf]: https://github.com/bufbuild/buf
+[cachix]: https://www.cachix.org
+[cargo]: https://doc.rust-lang.org/cargo
+[clippy]: https://github.com/rust-lang/rust-clippy
 [dhall]: https://dhall-lang.org
+[dhall-to-nix]: https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-nix
 [elixir]: https://elixir-lang.org
 [flake-utils]: https://github.com/numtide/flake-utils
 [gleam]: https://gleam.run
 [go]: https://go.dev
+[gradle]: https://gradle.org
 [iex]: https://hexdocs.pm/iex/IEx.html
 [java]: https://java.com
 [kotlin]: https://kotlinlang.org
+[lorri]: https://github.com/target/lorri
+[maven]: https://maven.apache.org
 [mix]: https://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html
+[niv]: https://github.com/nmattia/niv
 [nix]: https://nixos.org
+[nixfmt]: https://github.com/serokell/nixfmt
 [nixpkgs]: https://github.com/NixOS/nixpkgs
 [nix-direnv]: https://github.com/nix-community/nix-direnv
 [node]: https://nodejs.org
 [phoenix]: https://phoenixframework.org
+[pnpm]: https://pnpm.io
 [protobuf]: https://developers.google.com/protocol-buffers
 [rust]: https://rust-lang.org
 [scala]: https://scala-lang.org
+[statix]: https://github.com/nerdypepper/statix
+[sbt]: https://www.scala-sbt.org
+[vulnix]: https://github.com/flyingcircusio/vulnix
+[yarn]: https://yarnpkg.com
 [zig]: https://ziglang.org
diff --git a/java/flake.nix b/java/flake.nix
index f6312b2..a397dd0 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -7,16 +7,16 @@
     let inherit (dev.lib) flake-utils nixpkgs;
     in flake-utils.lib.eachDefaultSystem (system:
       let
-        jdk = "jdk17";
+        jdk = pkgs.jdk17;
 
         config = {
           packageOverrides = p: {
-            gradle = (p.gradle.override { java = p.${jdk}; });
+            gradle = (p.gradle.override { java = jdk; });
           };
         };
 
         pkgs = import nixpkgs { inherit config jdk system; };
-        java = pkgs.${jdk};
+        java = jdk;
         buildTools = with pkgs; [ ant gradle maven ];
         inherit (pkgs) mkShell;
       in {
diff --git a/kotlin/flake.nix b/kotlin/flake.nix
index a7b2476..03501f8 100644
--- a/kotlin/flake.nix
+++ b/kotlin/flake.nix
@@ -7,22 +7,22 @@
     let inherit (dev.lib) flake-utils nixpkgs;
     in flake-utils.lib.eachDefaultSystem (system:
       let
-        jdk = "jdk17";
+        jdk = pkgs.jdk17;
 
         config = {
           packageOverrides = p: {
-            gradle = (p.gradle.override { java = p.${jdk}; });
+            gradle = (p.gradle.override { java = jdk; });
 
-            kotlin = (p.kotlin.override { jre = p.${jdk}; });
+            kotlin = (p.kotlin.override { jre = jdk; });
           };
         };
 
         pkgs = import nixpkgs { inherit config system; };
+        inherit (pkgs) mkShell;
+
         kotlin = pkgs.kotlin;
         buildTools = with pkgs; [ gradle ];
         otherTools = with pkgs; [ gcc ncurses patchelf zlib ];
-
-        inherit (pkgs) mkShell;
       in {
         devShells = {
           default = mkShell {
diff --git a/nix/flake.nix b/nix/flake.nix
index 65f0567..0a10cc5 100644
--- a/nix/flake.nix
+++ b/nix/flake.nix
@@ -9,7 +9,6 @@
       let
         pkgs = import nixpkgs { inherit system; };
 
-        nix = pkgs.nixUnstable;
         dhallNix = pkgs.haskellPackages.dhall-nix;
 
         nixRelatedTools = with pkgs; [
@@ -18,14 +17,12 @@
           lorri
           niv
           nixfmt
-          nixpkgs-fmt
           statix
+          vulnix
         ];
 
         inherit (pkgs) mkShell;
       in {
-        devShells = {
-          default = mkShell { buildInputs = [ nix ] ++ nixRelatedTools; };
-        };
+        devShells = { default = mkShell { buildInputs = nixRelatedTools; }; };
       });
 }
diff --git a/node/flake.nix b/node/flake.nix
index 88d914a..189f7a5 100644
--- a/node/flake.nix
+++ b/node/flake.nix
@@ -11,13 +11,13 @@
 
         inherit (pkgs) mkShell;
 
-        nodejs = pkgs.nodejs;
+        nodejs = pkgs.nodejs-18_x;
         pnpm = pkgs.nodePackages.pnpm;
-        yarn = pkgs.yarn;
+        yarn = (pkgs.yarn.override { inherit nodejs; });
       in {
         devShells = {
           default = mkShell {
-            buildInputs = [ nodejs pnpm (yarn.override { inherit nodejs; }) ];
+            buildInputs = [ nodejs pnpm yarn ];
 
             shellHook = ''
               echo "node `${nodejs}/bin/node --version`"
diff --git a/rust/flake.nix b/rust/flake.nix
index e069385..b6294dc 100644
--- a/rust/flake.nix
+++ b/rust/flake.nix
@@ -27,8 +27,7 @@
 
         deps = with pkgs; [ openssl pkgconfig ];
         rustTools = with pkgs;
-          [ cargo-profiler rust-analyzer ]
-          ++ optionals isLinux (with pkgs; [ cargo-watch ]);
+          [ rust-analyzer ] ++ optionals isLinux (with pkgs; [ cargo-watch ]);
       in {
         packages.default = rust;
 
diff --git a/scala/flake.nix b/scala/flake.nix
index ad14060..88f8cd9 100644
--- a/scala/flake.nix
+++ b/scala/flake.nix
@@ -8,7 +8,6 @@
     in flake-utils.lib.eachDefaultSystem (system:
       let
         jdk = "jdk17";
-        jdkPkg = pkgs.${jdk};
 
         config = {
           packageOverrides = p: {
@@ -27,7 +26,7 @@
       in {
         devShells = {
           default = mkShell {
-            buildInputs = [ scala jdkPkg ] ++ buildTools;
+            buildInputs = [ scala ] ++ buildTools;
 
             shellHook = ''
               ${scala}/bin/scala -version