From 1ef8008ca7a7b38570f06abdbb7960e93ac044ef Mon Sep 17 00:00:00 2001 From: Alex Zero Date: Sun, 13 Aug 2023 01:31:32 +0100 Subject: [PATCH 1/4] Fix follow path checking at depths greater than 2 We need to recurse into the input tree to handle follows paths that trarverse multiple inputs that may or may not be follow paths themselves. --- src/libexpr/flake/lockfile.cc | 2 +- tests/flakes/follow-paths.sh | 63 +++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+), 1 deletion(-) diff --git a/src/libexpr/flake/lockfile.cc b/src/libexpr/flake/lockfile.cc index ba2fd46f0b9..3c202967a02 100644 --- a/src/libexpr/flake/lockfile.cc +++ b/src/libexpr/flake/lockfile.cc @@ -345,7 +345,7 @@ void LockFile::check() for (auto & [inputPath, input] : inputs) { if (auto follows = std::get_if<1>(&input)) { - if (!follows->empty() && !get(inputs, *follows)) + if (!follows->empty() && !findInput(*follows)) throw Error("input '%s' follows a non-existent input '%s'", printInputPath(inputPath), printInputPath(*follows)); diff --git a/tests/flakes/follow-paths.sh b/tests/flakes/follow-paths.sh index fe9b51c652e..a70d9acb239 100644 --- a/tests/flakes/follow-paths.sh +++ b/tests/flakes/follow-paths.sh @@ -148,3 +148,66 @@ git -C $flakeFollowsA add flake.nix nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid'" nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'" + +# Now test follow path overloading +flakeFollowsOverloadA=$TEST_ROOT/follows/overload/flakeA +flakeFollowsOverloadB=$TEST_ROOT/follows/overload/flakeA/flakeB +flakeFollowsOverloadC=$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC +flakeFollowsOverloadD=$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC/flakeD + +# Test following path flakerefs. +createGitRepo $flakeFollowsOverloadA +mkdir -p $flakeFollowsOverloadB +mkdir -p $flakeFollowsOverloadC +mkdir -p $flakeFollowsOverloadD + +cat > $flakeFollowsOverloadD/flake.nix < $flakeFollowsOverloadC/flake.nix < $flakeFollowsOverloadB/flake.nix < $flakeFollowsOverloadA/flake.nix < Date: Mon, 14 Aug 2023 18:52:21 +0100 Subject: [PATCH 2/4] Add release notes for the previous commit --- doc/manual/src/release-notes/rl-next.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/manual/src/release-notes/rl-next.md b/doc/manual/src/release-notes/rl-next.md index 7ddb5ca004e..5a870f1abc7 100644 --- a/doc/manual/src/release-notes/rl-next.md +++ b/doc/manual/src/release-notes/rl-next.md @@ -22,3 +22,5 @@ - Introduce a new [`outputOf`](@docroot@/language/builtins.md#builtins-outputOf) builtin. It is part of the [`dynamic-derivations`](@docroot@/contributing/experimental-features.md#xp-feature-dynamic-derivations) experimental feature. + +- Flake follow paths at depths greater than 2 are now handled correctly, preventing "follows a non-existent input" errors. From 20d9c672d14de3f05a791251a67618d679cf4173 Mon Sep 17 00:00:00 2001 From: Vertex <5567402+VertexA115@users.noreply.github.com> Date: Tue, 15 Aug 2023 10:10:27 +0100 Subject: [PATCH 3/4] Update tests/flakes/follow-paths.sh Co-authored-by: Robert Hensing --- tests/flakes/follow-paths.sh | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tests/flakes/follow-paths.sh b/tests/flakes/follow-paths.sh index a70d9acb239..f9d5c8c806c 100644 --- a/tests/flakes/follow-paths.sh +++ b/tests/flakes/follow-paths.sh @@ -150,6 +150,25 @@ nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override fo nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'" # Now test follow path overloading +# This tests a lockfile checking regression https://github.com/NixOS/nix/pull/8819 +# +# We construct the following graph, where p->q means p has input q. +# A double edge means that the edge gets overridden using `follows`. +# +# A +# / \ +# / \ +# v v +# B ==> C --- follows declared in A +# \\ / +# \\/ --- follows declared in B +# v +# D +# +# The message was +# error: input 'B/D' follows a non-existent input 'B/C/D' +# +# Note that for `B` to resolve its follow for `D`, it needs `C/D`, for which it needs to resolve the follow on `C` first. flakeFollowsOverloadA=$TEST_ROOT/follows/overload/flakeA flakeFollowsOverloadB=$TEST_ROOT/follows/overload/flakeA/flakeB flakeFollowsOverloadC=$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC From 75243c96937b472665b94729df81f8296b262085 Mon Sep 17 00:00:00 2001 From: Robert Hensing Date: Fri, 18 Aug 2023 14:46:13 +0200 Subject: [PATCH 4/4] test/flakes/follow-paths.sh: Quote Co-authored-by: Alex Ameen --- tests/flakes/follow-paths.sh | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/tests/flakes/follow-paths.sh b/tests/flakes/follow-paths.sh index f9d5c8c806c..dc97027aca3 100644 --- a/tests/flakes/follow-paths.sh +++ b/tests/flakes/follow-paths.sh @@ -146,8 +146,8 @@ EOF git -C $flakeFollowsA add flake.nix -nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid'" -nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'" +nix flake lock "$flakeFollowsA" 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid'" +nix flake lock "$flakeFollowsA" 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'" # Now test follow path overloading # This tests a lockfile checking regression https://github.com/NixOS/nix/pull/8819 @@ -169,18 +169,18 @@ nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override fo # error: input 'B/D' follows a non-existent input 'B/C/D' # # Note that for `B` to resolve its follow for `D`, it needs `C/D`, for which it needs to resolve the follow on `C` first. -flakeFollowsOverloadA=$TEST_ROOT/follows/overload/flakeA -flakeFollowsOverloadB=$TEST_ROOT/follows/overload/flakeA/flakeB -flakeFollowsOverloadC=$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC -flakeFollowsOverloadD=$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC/flakeD +flakeFollowsOverloadA="$TEST_ROOT/follows/overload/flakeA" +flakeFollowsOverloadB="$TEST_ROOT/follows/overload/flakeA/flakeB" +flakeFollowsOverloadC="$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC" +flakeFollowsOverloadD="$TEST_ROOT/follows/overload/flakeA/flakeB/flakeC/flakeD" # Test following path flakerefs. -createGitRepo $flakeFollowsOverloadA -mkdir -p $flakeFollowsOverloadB -mkdir -p $flakeFollowsOverloadC -mkdir -p $flakeFollowsOverloadD +createGitRepo "$flakeFollowsOverloadA" +mkdir -p "$flakeFollowsOverloadB" +mkdir -p "$flakeFollowsOverloadC" +mkdir -p "$flakeFollowsOverloadD" -cat > $flakeFollowsOverloadD/flake.nix < "$flakeFollowsOverloadD/flake.nix" < $flakeFollowsOverloadD/flake.nix < $flakeFollowsOverloadC/flake.nix < "$flakeFollowsOverloadC/flake.nix" < $flakeFollowsOverloadC/flake.nix < $flakeFollowsOverloadB/flake.nix < "$flakeFollowsOverloadB/flake.nix" < $flakeFollowsOverloadB/flake.nix < $flakeFollowsOverloadA/flake.nix < "$flakeFollowsOverloadA/flake.nix" < $flakeFollowsOverloadA/flake.nix <