Issue description

Derivations that use src = ./. will be rebuilt on any change to the .nix file that includes them, including formatting changes caused by nixfmt-rfc-style for RFC 166.

List of files where this may be the case

Generated with rg -F 'src = ./.' --sort=path -l -tnix and not very thoroughly audited. Unchecked entries need work or attention.

• doc/default.nix: Minor Nixpkgs doc improvements #319875
• maintainers/scripts/convert-to-import-cargo-lock/default.nix (uses cleanSourceWith)
• nixos/lib/test-driver/default.nix: nixos/lib/test-driver: Prevent unnecessary rebuilds #319878
• pkgs/build-support/node/fetch-npm-deps/default.nix (uses cleanSourceWith)
• pkgs/build-support/release/default.nix (only in a comment)
• pkgs/build-support/rust/test/import-cargo-lock/basic/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/basic-dynamic/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/git-dependency/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/git-dependency-branch/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/git-dependency-tag/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/build-support/rust/test/import-cargo-lock/v1/default.nix tests.importCargoLock: fix self-inclusive src listings in .nix files #303146
• pkgs/by-name/pu/purescm/package.nix
• pkgs/by-name/pu/purescm/package.nix
• [ ] pkgs/development/compilers/ghcjs/8.10/stage0.nix (not used)
• [ ] pkgs/development/compilers/pakcs/curry-frontend.nix (not used)
• pkgs/development/compilers/reason/tests/hello/default.nix: reason.tests.hello: Prevent unnecessary rebuilds #319883
• pkgs/development/cuda-modules/saxpy/default.nix: cudaPackages.saxpy: Avoid unnecessary rebuilds #319886
• pkgs/development/interpreters/python/tests/test_nix_pythonprefix/typeddep/default.nix: python3.tests.nix-pythonprefix-mypy: Avoid unnecessary rebuilds #319888
• pkgs/development/julia-modules/tests/julia-top-n/default.nix: julia-top-n: fix self-inclusive src #320580
• pkgs/development/libraries/nanopb/test-message-with-annotations/default.nix: nanopb: Fix self-inclusive src #315684
• pkgs/development/libraries/nanopb/test-message-with-options/default.nix: nanopb: Fix self-inclusive src #315684
• pkgs/development/libraries/nanopb/test-simple-proto2/default.nix: nanopb: Fix self-inclusive src #315684
• pkgs/development/libraries/nanopb/test-simple-proto3/default.nix: nanopb: Fix self-inclusive src #315684
• pkgs/development/libraries/science/math/libtorch/test/default.nix: libtorch-bin: fix test having self-inclusive src #320579
• pkgs/development/libraries/science/math/mkl/test/default.nix mkl: fix self-inclusive test src #323634
• pkgs/development/ocaml-modules/reason-native/tests/console/default.nix ocamlPackages.reason-native: 2022-08-31-a0ddab6 -> <version>-unstable-2024-05-07 #322767
• pkgs/development/python-modules/spacy/annotation-test/default.nix python312Packages.spacy: clean source for annotation test #319939
• pkgs/development/python-modules/spacy-transformers/annotation-test/default.nix python312Packages.spacy: clean source for annotation test #319939
• pkgs/development/python-modules/waitress-django/default.nix python3Packages: format with nixfmt #313628
• pkgs/development/tools/yarn2nix-moretea/yarn2nix/default.nix: yarn2nix: avoid appearing to include src #320578
• pkgs/misc/documentation-highlighter/default.nix (uses cleanSourceWith)
• pkgs/servers/mx-puppet-discord/node-packages.nix
• pkgs/servers/sip/kamailio/test-kamailio-bin/default.nix kamailio: fix test src #312519
• pkgs/test/haskell/cabalSdist/local/generated.nix: tests.haskell: prevent unnecessary rebuilds #320572
• pkgs/test/haskell/setBuildTarget/default.nix: tests.haskell: prevent unnecessary rebuilds #320572
• pkgs/tools/nix/nixos-option/default.nix nixos-option: fix self inclusive src #307564 Revert "nixos-option: fix self inclusive src" #307936 nixos-option: fix self inclusive src (move src) #325614
• pkgs/tools/system/dell-command-configure/default.nix dell-command-configure: fix self inclusive src #307479