diff --git a/analysis.nix b/analysis.nix
deleted file mode 100644
index 3929d678e..000000000
--- a/analysis.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-let
-  # Use `niv update` to update nixpkgs.
-  # See https://github.com/nmattia/niv/
-  sources = import ./nix/sources.nix;
-
-  pkgs = import sources.nixpkgs { config.allowUnfree = true; overlays = []; };
-
-  my-python = pkgs.python39.withPackages (p: with p; [
-    cve-bin-tool
-    deepdiff
-    defusedxml
-    dockerfile-parse
-    elasticsearch
-    icalendar
-    kaitaistruct
-    parameterized
-    pdfminer
-    psycopg2
-    pytest
-    pyyaml
-    tinycss2
-    tlsh
-    yara-python
-  ]);
-
-in
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    apkid
-    binutils
-    libxml2
-    openjdk8
-    openssl
-    my-python
-    qemu
-    utillinux
-  ];
-}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..6c49d1d49
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1630338749,
+        "narHash": "sha256-J1LsmwGtlYpqIMYEi/amMKkk0VfRrwHaEs/uylugGnE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "8a2ec31e224de9461390cdd03e5e0b0290cdad0b",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..58d71c207
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,133 @@
+{
+  description = "Binary Analysis Next Generation (BANG)";
+
+  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";
+
+  outputs = { self, nixpkgs }:
+
+    let
+      supportedSystems = [ "x86_64-linux" "i686-linux" "aarch64-linux" ];
+      forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f system);
+      nixpkgsFor = forAllSystems (system: import nixpkgs {
+        inherit system;
+        config.allowUnfree = true;
+      });
+    in {
+      devShells = forAllSystems (system:
+        with nixpkgsFor.${system};
+
+        {
+          default =
+            let
+              my-python = pkgs.python3.withPackages (p: with p; [
+                brotli
+                deepdiff
+                defusedxml
+                kaitaistruct
+                leb128
+                lz4
+                mutf8
+                python-lzo
+                parameterized
+                pdfminer
+                pefile
+                pillow
+                protobuf
+                pyaxmlparser
+                pytest
+                python-snappy
+                pyyaml
+                telfhash
+                tlsh
+                zstd
+              ]);
+            in pkgs.mkShell {
+              buildInputs = with pkgs; [
+                binutils
+                cabextract
+                e2tools
+                innoextract
+                libxml2
+                lz4
+                mailcap
+                ncompress
+                openjdk8
+                openssl
+                my-python
+                protobuf
+                qemu
+                rzip
+                sasquatch
+                squashfsTools
+                unrar
+                unshield
+                utillinux
+                zchunk
+                zstd
+              ];
+            };
+
+          analysis =
+            let
+              my-python = pkgs.python39.withPackages (p: with p; [
+                cve-bin-tool
+                deepdiff
+                defusedxml
+                dockerfile-parse
+                elasticsearch
+                icalendar
+                kaitaistruct
+                parameterized
+                pdfminer
+                psycopg2
+                pytest
+                pyyaml
+                tinycss2
+                tlsh
+                yara-python
+              ]);
+            in pkgs.mkShell {
+              buildInputs = with pkgs; [
+                apkid
+                binutils
+                libxml2
+                openjdk8
+                openssl
+                my-python
+                qemu
+                utillinux
+              ];
+            };
+
+          maintenance =
+            let
+              my-python = pkgs.python39.withPackages (p: with p; [
+                click
+                cxxfilt
+                defusedxml
+                packageurl-python
+                psycopg2
+                pytest
+                python-ctags3
+                pyyaml
+                requests
+                telfhash
+                tlsh
+                woodblock
+              ]);
+            in pkgs.mkShell {
+              buildInputs = with pkgs; [
+                gettext
+                my-python
+                universal-ctags
+                yara
+              ];
+            };
+
+        });
+
+      devShell = forAllSystems (system: self.devShells.${system}.default);
+
+    };
+
+}
diff --git a/maintenance.nix b/maintenance.nix
deleted file mode 100644
index c03f8372b..000000000
--- a/maintenance.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-let
-  # Use `niv update` to update nixpkgs.
-  # See https://github.com/nmattia/niv/
-  sources = import ./nix/sources.nix;
-
-  pkgs = import sources.nixpkgs { config.allowUnfree = true; overlays = []; };
-
-  my-python = pkgs.python39.withPackages (p: with p; [
-    click
-    cxxfilt
-    defusedxml
-    packageurl-python
-    psycopg2
-    pytest
-    python-ctags3
-    pyyaml
-    requests
-    telfhash
-    tlsh
-    woodblock
-  ]);
-    
-in
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    gettext
-    my-python
-    universal-ctags
-    yara
-  ];
-}
diff --git a/nix/sources.json b/nix/sources.json
deleted file mode 100644
index dc488f72c..000000000
--- a/nix/sources.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-    "nixpkgs": {
-        "branch": "nixos-unstable",
-        "description": "Nixpkgs/NixOS branches that track the Nixpkgs/NixOS channels",
-        "homepage": "https://github.com/NixOS/nixpkgs",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "88226ea038e538e09c272a7c56ba73c3f5eed57f",
-        "sha256": "1lg68wys30p8f2d6mkh7ivr7gkxs4zyq64rxxhwk15462f8mbv0w",
-        "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/88226ea038e538e09c272a7c56ba73c3f5eed57f.tar.gz",
-        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
-    }
-}
diff --git a/nix/sources.nix b/nix/sources.nix
deleted file mode 100644
index 1938409dd..000000000
--- a/nix/sources.nix
+++ /dev/null
@@ -1,174 +0,0 @@
-# This file has been generated by Niv.
-
-let
-
-  #
-  # The fetchers. fetch_<type> fetches specs of type <type>.
-  #
-
-  fetch_file = pkgs: name: spec:
-    let
-      name' = sanitizeName name + "-src";
-    in
-      if spec.builtin or true then
-        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
-      else
-        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
-
-  fetch_tarball = pkgs: name: spec:
-    let
-      name' = sanitizeName name + "-src";
-    in
-      if spec.builtin or true then
-        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
-      else
-        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
-
-  fetch_git = name: spec:
-    let
-      ref =
-        if spec ? ref then spec.ref else
-          if spec ? branch then "refs/heads/${spec.branch}" else
-            if spec ? tag then "refs/tags/${spec.tag}" else
-              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
-    in
-      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
-
-  fetch_local = spec: spec.path;
-
-  fetch_builtin-tarball = name: throw
-    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
-        $ niv modify ${name} -a type=tarball -a builtin=true'';
-
-  fetch_builtin-url = name: throw
-    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
-        $ niv modify ${name} -a type=file -a builtin=true'';
-
-  #
-  # Various helpers
-  #
-
-  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
-  sanitizeName = name:
-    (
-      concatMapStrings (s: if builtins.isList s then "-" else s)
-        (
-          builtins.split "[^[:alnum:]+._?=-]+"
-            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
-        )
-    );
-
-  # The set of packages used when specs are fetched using non-builtins.
-  mkPkgs = sources: system:
-    let
-      sourcesNixpkgs =
-        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
-      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
-      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
-    in
-      if builtins.hasAttr "nixpkgs" sources
-      then sourcesNixpkgs
-      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
-        import <nixpkgs> {}
-      else
-        abort
-          ''
-            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
-            add a package called "nixpkgs" to your sources.json.
-          '';
-
-  # The actual fetching function.
-  fetch = pkgs: name: spec:
-
-    if ! builtins.hasAttr "type" spec then
-      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
-    else if spec.type == "file" then fetch_file pkgs name spec
-    else if spec.type == "tarball" then fetch_tarball pkgs name spec
-    else if spec.type == "git" then fetch_git name spec
-    else if spec.type == "local" then fetch_local spec
-    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
-    else if spec.type == "builtin-url" then fetch_builtin-url name
-    else
-      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
-
-  # If the environment variable NIV_OVERRIDE_${name} is set, then use
-  # the path directly as opposed to the fetched source.
-  replace = name: drv:
-    let
-      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
-      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
-    in
-      if ersatz == "" then drv else
-        # this turns the string into an actual Nix path (for both absolute and
-        # relative paths)
-        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
-
-  # Ports of functions for older nix versions
-
-  # a Nix version of mapAttrs if the built-in doesn't exist
-  mapAttrs = builtins.mapAttrs or (
-    f: set: with builtins;
-    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
-  );
-
-  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
-  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
-
-  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
-  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
-
-  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
-  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
-  concatMapStrings = f: list: concatStrings (map f list);
-  concatStrings = builtins.concatStringsSep "";
-
-  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
-  optionalAttrs = cond: as: if cond then as else {};
-
-  # fetchTarball version that is compatible between all the versions of Nix
-  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
-    let
-      inherit (builtins) lessThan nixVersion fetchTarball;
-    in
-      if lessThan nixVersion "1.12" then
-        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
-      else
-        fetchTarball attrs;
-
-  # fetchurl version that is compatible between all the versions of Nix
-  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
-    let
-      inherit (builtins) lessThan nixVersion fetchurl;
-    in
-      if lessThan nixVersion "1.12" then
-        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
-      else
-        fetchurl attrs;
-
-  # Create the final "sources" from the config
-  mkSources = config:
-    mapAttrs (
-      name: spec:
-        if builtins.hasAttr "outPath" spec
-        then abort
-          "The values in sources.json should not have an 'outPath' attribute"
-        else
-          spec // { outPath = replace name (fetch config.pkgs name spec); }
-    ) config.sources;
-
-  # The "config" used by the fetchers
-  mkConfig =
-    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
-    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
-    , system ? builtins.currentSystem
-    , pkgs ? mkPkgs sources system
-    }: rec {
-      # The sources, i.e. the attribute set of spec name to spec
-      inherit sources;
-
-      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
-      inherit pkgs;
-    };
-
-in
-mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
diff --git a/shell.nix b/shell.nix
index 0e4d13be0..db84e3d07 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,56 +1,3 @@
-let
-  # Use `niv update` to update nixpkgs.
-  # See https://github.com/nmattia/niv/
-  sources = import ./nix/sources.nix;
-
-  pkgs = import sources.nixpkgs { config.allowUnfree = true; overlays = []; };
-
-  my-python = pkgs.python3.withPackages (p: with p; [
-    brotli
-    deepdiff
-    defusedxml
-    kaitaistruct
-    leb128
-    lz4
-    mutf8
-    python-lzo
-    parameterized
-    pdfminer
-    pefile
-    pillow
-    protobuf
-    pyaxmlparser
-    pytest
-    python-snappy
-    pyyaml
-    telfhash
-    tlsh
-    zstd
-  ]);
-    
-in
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    binutils
-    cabextract
-    e2tools
-    innoextract
-    libxml2
-    lz4
-    mailcap
-    ncompress
-    openjdk8
-    openssl
-    my-python
-    protobuf
-    qemu
-    rzip
-    sasquatch
-    squashfsTools
-    unrar
-    unshield
-    utillinux
-    zchunk
-    zstd
-  ];
-}
+(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
+  src = builtins.fetchGit ./.;
+}).shellNix