diff --git a/c/flake.lock b/c/flake.lock
index d57185e..64b483e 100644
--- a/c/flake.lock
+++ b/c/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755082269,
-        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
+        "lastModified": 1729818716,
+        "narHash": "sha256-XRfkUsxLzFkMn3Tpstio1gNOIQ+2PZPCKbifJ2IXxlw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
+        "rev": "062c4f59744fcffa2e5aa3ef443dc8b4d1674ed6",
         "type": "github"
       },
       "original": {
diff --git a/c/flake.nix b/c/flake.nix
index 1c7b728..7c10da2 100644
--- a/c/flake.nix
+++ b/c/flake.nix
@@ -16,52 +16,17 @@
   in {
     devShells.default = pkgs.mkShell {
       packages = with pkgs; [
-        #cmake
+        cmake
         gcc
-        #gccStdenv
         gnumake
 
-        # valgrind
+        valgrind
 
-        #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
+        astyle
 
         # You might want to use your own IDE.
-        #(jetbrains.plugins.addPlugins jetbrains.clion [ "github-copilot" ])
-        #vscodium
+        # (jetbrains.plugins.addPlugins jetbrains.clion [ "github-copilot" ])
       ];
-
-      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 d57185e..376f488 100644
--- a/java/flake.lock
+++ b/java/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755082269,
-        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
+        "lastModified": 1728538411,
+        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
+        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
         "type": "github"
       },
       "original": {
diff --git a/java/flake.nix b/java/flake.nix
index ede6013..e1a7ff6 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -15,8 +15,8 @@
   in {
     devShells.default = pkgs.mkShell {
       packages = with pkgs; [
-        jdk
-        gradle
+        jdk8
+        openjdk17
 
         # 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 6c7036a..376f488 100644
--- a/latex/flake.lock
+++ b/latex/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755268003,
-        "narHash": "sha256-nNaeJjo861wFR0tjHDyCnHs1rbRtrMgxAKMoig9Sj/w=",
+        "lastModified": 1728538411,
+        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "32f313e49e42f715491e1ea7b306a87c16fe0388",
+        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
         "type": "github"
       },
       "original": {
diff --git a/latex/flake.nix b/latex/flake.nix
index 599e687..e2cb799 100644
--- a/latex/flake.nix
+++ b/latex/flake.nix
@@ -17,13 +17,6 @@
             texlive.combined.scheme-full
             pgfplots
             biber
-
-            gnumake
-            latexminted
-
-            # Presentation tools
-            pdfpc
-            pympress
           ];
         };
       }
diff --git a/minecraft/flake.lock b/minecraft/flake.lock
index fff8092..3e9a197 100644
--- a/minecraft/flake.lock
+++ b/minecraft/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
         "type": "github"
       },
       "original": {
@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755027561,
-        "narHash": "sha256-IVft239Bc8p8Dtvf7UAACMG5P3ZV+3/aO28gXpGtMXI=",
+        "lastModified": 1683777345,
+        "narHash": "sha256-V2p/A4RpEGqEZussOnHYMU6XglxBJGCODdzoyvcwig8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "005433b926e16227259a1843015b5b2b7f7d1fc3",
+        "rev": "635a306fc8ede2e34cb3dd0d6d0a5d49362150ed",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/minecraft/flake.nix b/minecraft/flake.nix
index 43bd3c9..2d3df37 100644
--- a/minecraft/flake.nix
+++ b/minecraft/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "Minecraft flake";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
   outputs = { self, nixpkgs, flake-utils}:
@@ -15,13 +15,16 @@
       in {
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [ 
-            # minecraft
-            prismlauncher
-            ffmpeg
-
-            jdk22_headless # Minecraft 1.21
+            minecraft
+            prismlauncher-unwrapped
 
+            libredirect
             steam-run
+            rustc
+            flite
+            glibc
+            xorg.libX11
+            xorg.libXext
           ];
         };
       }
diff --git a/prolog/flake.lock b/prolog/flake.lock
deleted file mode 100644
index d57185e..0000000
--- a/prolog/flake.lock
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  "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
deleted file mode 100644
index 81379e1..0000000
--- a/prolog/flake.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  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
deleted file mode 100644
index c3e7d56..0000000
--- a/scala/flake.lock
+++ /dev/null
@@ -1,64 +0,0 @@
-{
-  "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
deleted file mode 100644
index 2ee14be..0000000
--- a/scala/flake.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  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" ])
-          ];
-        };
-      }
-    );
-}