diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 05a76b72..1a19df90 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,4 +1,4 @@
-name: CI
+name: ci
 
 on:
   push:
@@ -10,7 +10,7 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
 
     steps:
@@ -54,3 +54,32 @@ jobs:
 
       - name: Run executable
         run: cargo run
+
+  coverage:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Generate code coverage
+        run: |
+          make coverage
+
+      - name: Upload coverage to codecov.io
+        uses: codecov/codecov-action@v4
+        env: 
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  test-nix:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v30
+
+      - name: Run nix flake check
+        run: nix flake check --print-build-logs
+
+      - name: Run nix build
+        run: nix build --print-build-logs
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
deleted file mode 100644
index 8d6c8f3b..00000000
--- a/.github/workflows/coverage.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-name: Coverage
-
-on:
-  push:
-    branches: [master, release/*]
-  pull_request:
-    branches: [master, release/*]
-
-jobs:
-  test:
-    name: coverage
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Generate code coverage
-        run: |
-          make coverage
-
-      - name: Upload coverage to codecov.io
-        uses: codecov/codecov-action@v4
-        env: 
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Cargo.lock b/Cargo.lock
index f0c25954..b14a50ed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -958,7 +958,7 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
 name = "hl"
-version = "0.30.1-alpha.2"
+version = "0.30.1-alpha.3"
 dependencies = [
  "bincode",
  "byte-strings",
diff --git a/Cargo.toml b/Cargo.toml
index 3ac80049..3579f529 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ members = [".", "crate/encstr"]
 [workspace.package]
 repository = "https://github.com/pamburus/hl"
 authors = ["Pavel Ivanov <mr.pavel.ivanov@gmail.com>"]
-version = "0.30.1-alpha.2"
+version = "0.30.1-alpha.3"
 edition = "2021"
 license = "MIT"
 
diff --git a/nix/package.nix b/nix/package.nix
index 5e79dac1..745e483c 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -1,6 +1,8 @@
-{ lib
-, rustPlatform
-,
+{ 
+  lib,
+  stdenv,
+  rustPlatform,
+  installShellFiles,
 }:
 let
   cargoToml = builtins.fromTOML (builtins.readFile ../Cargo.toml);
@@ -21,6 +23,19 @@ rustPlatform.buildRustPackage {
     };
   };
 
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installShellCompletion --cmd hl \
+      --bash <($out/bin/hl --shell-completions bash) \
+      --fish <($out/bin/hl --shell-completions fish) \
+      --zsh <($out/bin/hl --shell-completions zsh)
+    $out/bin/hl --man-page >hl.1
+    installManPage hl.1
+  '';
+
+  doCheck = false;
+
   meta = {
     description = cargoToml.package.description;
     homepage = cargoToml.workspace.package.repository;