diff --git a/blog/default.nix b/blog/default.nix
index 6085fec..ce8a93e 100644
--- a/blog/default.nix
+++ b/blog/default.nix
@@ -1,15 +1,12 @@
-{ stdenv, lib, hugo, fetchgit, pkgs, nodejs, ruby }:
+{ blog-source, blog-source-localized, stdenv, lib, hugo, fetchgit, pkgs, nodejs, ruby }:
 
 let
   url = "https://dev.danilafe.com/Web-Projects/blog-static.git";
   requiredPackages = import ./required-packages.nix { inherit pkgs nodejs; };
   website = settings: stdenv.mkDerivation {
     name = "blog-static";
-    version = settings.rev;
-    src = fetchgit {
-      inherit url;
-      inherit (settings) rev sha256;
-    };
+    version = settings.source.rev;
+    src = settings.source;
     urlSub =
       let
         regexEscape = lib.escape [ "/" "(" ")" "[" "]" "+" "*" "\\" ];
@@ -35,13 +32,13 @@ let
 in
   {
     english = website {
-      inherit rev sha256;
+      source = blog-source;
       path = ".";
       drafts = false;
     };
     drafts = {
       english = website {
-        inherit rev sha256;
+	source = blog-source;
         path = ".";
         drafts = true;
         replaceUrl = {
@@ -50,8 +47,7 @@ in
         }; 
       };
       russian = website {
-        rev = localizationRev;    
-        sha256 = localizationSha256;
+        source = blog-source-localized;
         path = "ru";
         drafts = true;
         replaceUrl = {
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..411f716
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,49 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs";
+    flake-utils.url = "github:numtide/flake-utils";
+    blog-source = {
+      flake = false;
+      url = "https://dev.danilafe.com/Web-Projects/blog-static.git";
+      type = "git";
+      submodules = true;
+    };
+    blog-source-localized = {
+      flake = false;
+      url = "https://dev.danilafe.com/Web-Projects/blog-static.git";
+      ref = "localization";
+      type = "git";
+      submodules = true;
+    };
+    pegasus-source = {
+      url = "github:DanilaFe/pegasus";
+      flake = false;
+    };
+    pupper-bot-source = {
+      url = "git+https://dev.danilafe.com/Crystal-Bots/joann-pupper-bot";
+      flake = false;
+    };
+  };
+
+  outputs = { self, pupper-bot-source, pegasus-source, blog-source, blog-source-localized, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+            pegasus = pkgs.callPackage ./pegasus/default.nix {
+            inherit pegasus-source;
+          };
+          blog = pkgs.callPackage ./blog/default.nix {
+            inherit blog-source blog-source-localized;
+          };
+        in
+          {
+            packages = {
+              inherit pegasus;
+              blogEnglish = blog.english;
+              blogEnglishDrafts = blog.drafts.english;
+              blogRussianDrafts = blog.drafts.russian;
+            };
+          }
+      );
+}
diff --git a/pegasus/default.nix b/pegasus/default.nix
index d51264e..8a297d6 100644
--- a/pegasus/default.nix
+++ b/pegasus/default.nix
@@ -1,18 +1,12 @@
-{ stdenv, crystal, fetchFromGitHub }:
-
-let
-    version = "0489d47b191ecf8501787355b948801506e7c70f";
-    src = fetchFromGitHub {
-        owner = "DanilaFe";
-        repo = "pegasus";
-        rev = version;
-        sha256 = "097m7l16byis07xlg97wn5hdsz9k6c3h1ybzd2i7xhkj24kx230s";
-    };
-in
+{ pegasus-source, stdenv, crystal, fetchFromGitHub }:
     crystal.buildCrystalPackage {
         pname = "pegasus";
-        inherit version;
-        inherit src;
+	src = pegasus-source;
+	version = pegasus-source.rev;
+	format = "crystal";
+
+        # Programs don't do so well when running --help
+	installCheckPhase = "";
 
         crystalBinaries.pegasus.src = "src/pegasus.cr";
         crystalBinaries.pegasus-dot.src = "src/tools/dot/pegasus_dot.cr";