feat(dev): add devenv and remove unused cargo tools

home/options.nix

@@ -193,6 +193,7 @@ in
               };
               neovimAsManPager = lib.mkEnableOption "neovim as the man pager";
               extraPackages = mkExtraPackagesOption "dev" [
+                [ "devenv" ] # a devshell alternative
                 [ "jq" ] # json parser
                 [ "just" ] # just a command runner
                 [ "typos" ] # low false positive rate typo checker
@@ -208,10 +209,7 @@ in
                   options.enable = lib.mkEnableOption "rust development settings";
                   options.extraPackages = mkExtraPackagesOption "Rust" [
                     [ "cargo-insta" ] # snapshot testing
-                    [ "cargo-llvm-cov" ] # code coverage
-                    [ "cargo-msrv" ] # minimum supported version
                     [ "cargo-nextest" ] # better testing harness
-                    [ "cargo-sort" ] # sort deps and imports
                     [ "cargo-udeps" ] # check for unused dependencies (requires nightly)
                     [ "cargo-watch" ] # watch for file changes and run commands
                   ];