diff --git a/c/flake.lock b/c/flake.lock
index 64b483e..d57185e 100644
--- a/c/flake.lock
+++ b/c/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1729818716,
-        "narHash": "sha256-XRfkUsxLzFkMn3Tpstio1gNOIQ+2PZPCKbifJ2IXxlw=",
+        "lastModified": 1755082269,
+        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "062c4f59744fcffa2e5aa3ef443dc8b4d1674ed6",
+        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
         "type": "github"
       },
       "original": {
diff --git a/c/flake.nix b/c/flake.nix
index 7c10da2..1c7b728 100644
--- a/c/flake.nix
+++ b/c/flake.nix
@@ -16,17 +16,52 @@
   in {
     devShells.default = pkgs.mkShell {
       packages = with pkgs; [
-        cmake
+        #cmake
         gcc
+        #gccStdenv
         gnumake
 
-        valgrind
+        # valgrind
 
-        astyle
+        #astyle
+
+        # CUDA https://nixos.wiki/wiki/CUDA#cudatoolkit.2C_cudnn.2C_and_related_packages
+#        git gitRepo gnupg autoconf curl
+#        procps gnumake util-linux m4 gperf unzip
+#        cudatoolkit linuxPackages.nvidia_x11
+#        libGLU libGL
+#        xorg.libXi xorg.libXmu freeglut
+#        xorg.libXext xorg.libX11 xorg.libXv xorg.libXrandr zlib
+#        xorg.libXinerama
+#        ncurses5 stdenv.cc binutils
+#
+#        glib
+#        glibc
+#
+#        intel-ocl
+#        intel-compute-runtime
+#        opencl-clhpp
+#        opencl-clang
+#        opencl-headers
+#        ocl-icd
+#
+#        pkgconf
+#        waylandpp
+#        xorg.libXcursor
 
         # You might want to use your own IDE.
-        # (jetbrains.plugins.addPlugins jetbrains.clion [ "github-copilot" ])
+        #(jetbrains.plugins.addPlugins jetbrains.clion [ "github-copilot" ])
+        #vscodium
       ];
+
+      shellHook = ''
+        export CUDA_PATH=${pkgs.cudatoolkit}
+        # export LD_LIBRARY_PATH=${pkgs.linuxPackages.nvidia_x11}/lib:${pkgs.ncurses5}/lib
+        # export LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib"
+        export LD_LIBRARY_PATH="${pkgs.libGL}/lib/:${pkgs.stdenv.cc.cc.lib}/lib/:${pkgs.glibc}/lib"
+        export EXTRA_LDFLAGS="-L/lib -L${pkgs.linuxPackages.nvidia_x11}/lib"
+        export EXTRA_CCFLAGS="-I/usr/include"
+      '';
     };
   });
 }
diff --git a/java/flake.lock b/java/flake.lock
index 376f488..d57185e 100644
--- a/java/flake.lock
+++ b/java/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1728538411,
-        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
+        "lastModified": 1755082269,
+        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
+        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
         "type": "github"
       },
       "original": {
diff --git a/java/flake.nix b/java/flake.nix
index e1a7ff6..ede6013 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -15,8 +15,8 @@
   in {
     devShells.default = pkgs.mkShell {
       packages = with pkgs; [
-        jdk8
-        openjdk17
+        jdk
+        gradle
 
         # You might want to use your own IDE.
         # (jetbrains.plugins.addPlugins jetbrains.idea-ultimate [ "github-copilot" ])
diff --git a/latex/flake.lock b/latex/flake.lock
index 376f488..6c7036a 100644
--- a/latex/flake.lock
+++ b/latex/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1728538411,
-        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
+        "lastModified": 1755268003,
+        "narHash": "sha256-nNaeJjo861wFR0tjHDyCnHs1rbRtrMgxAKMoig9Sj/w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
+        "rev": "32f313e49e42f715491e1ea7b306a87c16fe0388",
         "type": "github"
       },
       "original": {
diff --git a/latex/flake.nix b/latex/flake.nix
index e2cb799..599e687 100644
--- a/latex/flake.nix
+++ b/latex/flake.nix
@@ -17,6 +17,13 @@
             texlive.combined.scheme-full
             pgfplots
             biber
+
+            gnumake
+            latexminted
+
+            # Presentation tools
+            pdfpc
+            pympress
           ];
         };
       }
diff --git a/minecraft/flake.lock b/minecraft/flake.lock
index 3e9a197..fff8092 100644
--- a/minecraft/flake.lock
+++ b/minecraft/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1683777345,
-        "narHash": "sha256-V2p/A4RpEGqEZussOnHYMU6XglxBJGCODdzoyvcwig8=",
+        "lastModified": 1755027561,
+        "narHash": "sha256-IVft239Bc8p8Dtvf7UAACMG5P3ZV+3/aO28gXpGtMXI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "635a306fc8ede2e34cb3dd0d6d0a5d49362150ed",
+        "rev": "005433b926e16227259a1843015b5b2b7f7d1fc3",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/minecraft/flake.nix b/minecraft/flake.nix
index 2d3df37..43bd3c9 100644
--- a/minecraft/flake.nix
+++ b/minecraft/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "Minecraft flake";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
   outputs = { self, nixpkgs, flake-utils}:
@@ -15,16 +15,13 @@
       in {
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [ 
-            minecraft
-            prismlauncher-unwrapped
+            # minecraft
+            prismlauncher
+            ffmpeg
+
+            jdk22_headless # Minecraft 1.21
 
-            libredirect
             steam-run
-            rustc
-            flite
-            glibc
-            xorg.libX11
-            xorg.libXext
           ];
         };
       }
diff --git a/prolog/flake.lock b/prolog/flake.lock
new file mode 100644
index 0000000..d57185e
--- /dev/null
+++ b/prolog/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1755082269,
+        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/prolog/flake.nix b/prolog/flake.nix
new file mode 100644
index 0000000..81379e1
--- /dev/null
+++ b/prolog/flake.nix
@@ -0,0 +1,27 @@
+{
+  description = "SWI-Prolog";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+  flake-utils.lib.eachDefaultSystem (system:
+  let
+    pkgs = import nixpkgs {
+      inherit system;
+      config.allowUnfree = true;
+    };
+  in {
+    devShells.default = pkgs.mkShell {
+      buildInputs = with pkgs; [
+        swi-prolog
+
+        # Editor
+        #(jetbrains.plugins.addPlugins jetbrains.idea-ultimate [ "github-copilot" ])
+        vscodium
+      ];
+    };
+  });
+}
diff --git a/scala/flake.lock b/scala/flake.lock
new file mode 100644
index 0000000..c3e7d56
--- /dev/null
+++ b/scala/flake.lock
@@ -0,0 +1,64 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": [
+          "systems"
+        ]
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1755082269,
+        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/scala/flake.nix b/scala/flake.nix
new file mode 100644
index 0000000..2ee14be
--- /dev/null
+++ b/scala/flake.nix
@@ -0,0 +1,33 @@
+{
+  description = "Scala shell";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    systems.url = "github:nix-systems/default";
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.systems.follows = "systems";
+    };
+  };
+
+  outputs = { nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        };
+      in {
+        devShells.default = pkgs.mkShell {
+          packages = with pkgs; [
+            jdk
+            scala-next
+            scala-cli
+
+            # You might want to use your own IDE.
+            (jetbrains.plugins.addPlugins jetbrains.idea-ultimate [ "github-copilot" ])
+          ];
+        };
+      }
+    );
+}