package.nix: factor out buildInputs

Change-Id: I52433bcb7f81f1114507757548f56d41ff1b0836

flake.nix

@@ -178,17 +178,7 @@
         inherit changelog-d;
         nativeBuildDeps = calledPackage.nativeBuildInputs;
 
-        buildDeps =
-          [ curl
-            bzip2 xz brotli editline
-            openssl sqlite
-            libarchive
-            boost
-            lowdown
-            libsodium
-          ]
-          ++ lib.optionals stdenv.isLinux [libseccomp]
-          ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid;
+        buildDeps = calledPackage.buildInputs;
 
         checkDeps = [
           gtest

package.nix

@@ -6,16 +6,28 @@
   autoreconfHook,
   bison,
   changelog-d,
+  boost,
+  brotli,
+  bzip2,
+  curl,
+  editline,
   fileset,
   flex,
+  git,
+  jq,
+  libarchive,
+  libcpuid,
+  libseccomp,
+  libsodium,
   lowdown,
   mdbook,
   mdbook-linkcheck,
-
-  pkg-config,
-  git,
   mercurial,
-  jq,
+  openssl,
+  pkg-config,
+  sqlite,
+  util-linuxMinimal,
+  xz,
 
   pname ? "nix",
   versionSuffix ? "",
@@ -84,4 +96,20 @@ in stdenv.mkDerivation (finalAttrs: {
     # FIXME(Qyriad): should this be util-linux as it is in current upstream?
     (buildPackages.util-linuxMinimal or buildPackages.utillinuxMinimal)
   ] ++ lib.optional (!officialRelease && buildUnreleasedNotes) changelog-d;
+
+  buildInputs = [
+    curl
+    bzip2
+    xz
+    brotli
+    editline
+    openssl
+    sqlite
+    libarchive
+    boost
+    lowdown
+    libsodium
+  ]
+    ++ lib.optionals stdenv.isLinux [ libseccomp ]
+    ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid;
 })