treewide: remove stdenv where not needed

pkgs/tools/backup/bupstash/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, installShellFiles, rustPlatform, ronn, pkg-config, libsodium }:
+{ lib, fetchFromGitHub, installShellFiles, rustPlatform, ronn, pkg-config, libsodium }:
 rustPlatform.buildRustPackage rec {
   pname = "bupstash";
   version = "0.6.4";

pkgs/tools/backup/diskrsync/default.nix

@@ -1,4 +1,4 @@
-{ buildGoPackage, fetchFromGitHub, lib, stdenv, openssh, makeWrapper }:
+{ buildGoPackage, fetchFromGitHub, lib, openssh, makeWrapper }:
 
 buildGoPackage rec {
   pname = "diskrsync";

pkgs/tools/backup/grab-site/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, python37, fetchFromGitHub }:
+{ lib, python37, fetchFromGitHub }:
 let
   python = python37.override {
     self = python;

pkgs/tools/backup/httrack/qt.nix

@@ -1,4 +1,4 @@
-{ mkDerivation, lib, stdenv, fetchurl, cmake, pkg-config, makeWrapper
+{ mkDerivation, lib, fetchurl, cmake, pkg-config, makeWrapper
 , httrack, qtbase, qtmultimedia }:
 
 mkDerivation rec {

pkgs/tools/backup/iceshelf/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, git, awscli, python3 }:
+{ lib, fetchFromGitHub, git, awscli, python3 }:
 
 python3.pkgs.buildPythonApplication rec {
   pname = "iceshelf";

pkgs/tools/backup/luckybackup/default.nix

@@ -1,4 +1,4 @@
-{ mkDerivation, lib, stdenv, fetchurl
+{ mkDerivation, lib, fetchurl
 , pkg-config, libtool, qmake
 , rsync, ssh
 }:

pkgs/tools/backup/rdiff-backup/default.nix

@@ -1,4 +1,4 @@
-{lib, stdenv, fetchurl, python2Packages, librsync, gnused }:
+{lib, fetchurl, python2Packages, librsync, gnused }:
 
 python2Packages.buildPythonApplication {
   name = "rdiff-backup-1.3.3";

pkgs/tools/backup/s3ql/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, python3Packages, sqlite, which }:
+{ lib, fetchFromGitHub, python3Packages, sqlite, which }:
 
 python3Packages.buildPythonApplication rec {
   pname = "s3ql";

pkgs/tools/backup/ugarit-manifest-maker/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, stdenv, eggDerivation, fetchegg }:
+{ pkgs, lib, eggDerivation, fetchegg }:
 let
   eggs = import ./eggs.nix { inherit eggDerivation fetchegg; };
 in with pkgs; eggDerivation rec {

pkgs/tools/backup/ugarit/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, stdenv, eggDerivation, fetchegg }:
+{ pkgs, lib, eggDerivation, fetchegg }:
 let
   eggs = import ./eggs.nix { inherit eggDerivation fetchegg; };
 in with pkgs; eggDerivation rec {

pkgs/tools/backup/wal-e/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, python3Packages, lzop, postgresql, pv }:
+{ lib, fetchurl, python3Packages, lzop, postgresql, pv }:
 
 python3Packages.buildPythonApplication rec {
   pname = "wal-e";

pkgs/tools/backup/zfs-replicate/default.nix

@@ -1,5 +1,5 @@
 { buildPythonApplication, click, fetchPypi, hypothesis, mypy, pytest
-, pytestcov, pytestrunner, lib, stdenv, stringcase
+, pytestcov, pytestrunner, lib, stringcase
 }:
 
 buildPythonApplication rec {