feat(Nix-flakes): Add pgBackRest flake

Author: jchancojr

nix/packages/pgbackrest.nix

@@ -0,0 +1,62 @@
+i{
+  bzip2,
+  fetchFromGitHub,
+  lib,
+  libbacktrace,
+  libpq,
+  libssh2,
+  libxml2,
+  libyaml,
+  lz4,
+  meson,
+  ninja,
+  pkg-config,
+  python3,
+  stdenv,
+  zlib,
+  zstd,
+  nixosTests,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "pgbackrest";
+  version = "2.57.0";
+
+  src = fetchFromGitHub {
+    owner = "pgbackrest";
+    repo = "pgbackrest";
+    tag = "release/${finalAttrs.version}";
+    hash = "sha256-d794519c0ecb4ec17f41c4267d07fe80ab6b3ac9cc1de5c7984887c5e6d7448a";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    python3
+  ];
+
+  buildInputs = [
+    bzip2
+    libbacktrace
+    libpq
+    libssh2
+    libxml2
+    libyaml
+    lz4
+    zlib
+    zstd
+  ];
+
+  passthru.tests = nixosTests.pgbackrest;
+
+  meta = {
+    description = "Reliable PostgreSQL backup & restore";
+    homepage = "https://pgbackrest.org";
+    changelog = "https://github.com/pgbackrest/pgbackrest/releases/tag/release%2F${finalAttrs.version}";
+    license = lib.licenses.mit;
+    mainProgram = "pgbackrest";
+  };
+})