Merge pull request #36 from nixops4/aanderse/main
Fix path coercion by calling eval_state_builder_load()
This commit is contained in:
Robert Hensing
GitHub
commit
a669289887
4 changed files with 264 additions and 42 deletions
94
Cargo.lock
generated
94
Cargo.lock
generated
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@ -4,9 +4,9 @@ version = 4
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[[package]]
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name = "aho-corasick"
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version = "1.1.4"
|
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version = "1.1.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
|
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checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
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dependencies = [
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"memchr",
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]
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@ -42,9 +42,9 @@ dependencies = [
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[[package]]
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name = "bitflags"
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version = "2.10.0"
|
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version = "2.9.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
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checksum = "2261d10cca569e4643e526d8dc2e62e433cc8aba21ab764233731f8d369bf394"
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[[package]]
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name = "cexpr"
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@ -57,9 +57,9 @@ dependencies = [
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[[package]]
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name = "cfg-if"
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version = "1.0.4"
|
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version = "1.0.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
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checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
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[[package]]
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name = "clang-sys"
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@ -105,7 +105,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
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dependencies = [
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"libc",
|
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"windows-sys 0.61.2",
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"windows-sys 0.61.1",
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]
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[[package]]
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@ -116,14 +116,14 @@ checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
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[[package]]
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name = "getrandom"
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version = "0.3.4"
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version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
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checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
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dependencies = [
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"cfg-if",
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"libc",
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"r-efi",
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"wasip2",
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"wasi",
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]
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[[package]]
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@ -134,11 +134,11 @@ checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
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[[package]]
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name = "home"
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version = "0.5.12"
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version = "0.5.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cc627f471c528ff0c4a49e1d5e60450c8f6461dd6d10ba9dcd3a61d3dff7728d"
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checksum = "589533453244b0995c858700322199b2becb13b627df2851f64a2775d024abcf"
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dependencies = [
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"windows-sys 0.61.2",
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"windows-sys 0.59.0",
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]
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[[package]]
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@ -164,9 +164,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
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[[package]]
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name = "libc"
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version = "0.2.180"
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version = "0.2.176"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bcc35a38544a891a5f7c865aca548a982ccb3b8650a5b06d0fd33a10283c56fc"
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checksum = "58f929b4d672ea937a23a1ab494143d968337a5f47e56d0815df1e0890ddf174"
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[[package]]
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name = "libloading"
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@ -192,9 +192,9 @@ checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
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[[package]]
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name = "log"
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version = "0.4.29"
|
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version = "0.4.28"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
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checksum = "34080505efa8e45a4b816c349525ebe327ceaa8559756f0356cba97ef3bf7432"
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[[package]]
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name = "memchr"
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@ -219,6 +219,7 @@ dependencies = [
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"nix-bindings-store",
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"nix-bindings-util",
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"nix-bindings-util-sys",
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"pkg-config",
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"tempfile",
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]
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@ -315,18 +316,18 @@ dependencies = [
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[[package]]
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name = "proc-macro2"
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version = "1.0.105"
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version = "1.0.101"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "535d180e0ecab6268a3e718bb9fd44db66bbbc256257165fc699dadf70d16fe7"
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checksum = "89ae43fd86e4158d6db51ad8e2b80f313af9cc74f5c0e03ccb87de09998732de"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.43"
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version = "1.0.41"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dc74d9a594b72ae6656596548f56f667211f8a97b3d4c3d467150794690dc40a"
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checksum = "ce25767e7b499d1b604768e7cde645d14cc8584231ea6b295e9c9eb22c02e1d1"
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dependencies = [
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"proc-macro2",
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]
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@ -339,9 +340,9 @@ checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
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[[package]]
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name = "regex"
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version = "1.12.2"
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version = "1.11.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "843bc0191f75f3e22651ae5f1e72939ab2f72a4bc30fa80a066bd66edefc24d4"
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checksum = "8b5288124840bee7b386bc413c487869b360b2b4ec421ea56425128692f2a82c"
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dependencies = [
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"aho-corasick",
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"memchr",
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@ -351,9 +352,9 @@ dependencies = [
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[[package]]
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name = "regex-automata"
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version = "0.4.13"
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version = "0.4.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
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checksum = "833eb9ce86d40ef33cb1306d8accf7bc8ec2bfea4355cbdebb3df68b40925cad"
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dependencies = [
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"aho-corasick",
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"memchr",
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@ -362,9 +363,9 @@ dependencies = [
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[[package]]
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name = "regex-syntax"
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version = "0.8.8"
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version = "0.8.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
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checksum = "caf4aa5b0f434c91fe5c7f1ecb6a5ece2130b02ad2a590589dda5146df959001"
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[[package]]
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name = "rustc-hash"
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@ -387,15 +388,15 @@ dependencies = [
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[[package]]
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name = "rustix"
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version = "1.1.3"
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version = "1.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
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checksum = "cd15f8a2c5551a84d56efdc1cd049089e409ac19a3072d5037a17fd70719ff3e"
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dependencies = [
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"bitflags",
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"errno",
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"libc",
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"linux-raw-sys 0.11.0",
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"windows-sys 0.61.2",
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"windows-sys 0.61.1",
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]
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[[package]]
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@ -406,9 +407,9 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
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[[package]]
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name = "syn"
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version = "2.0.114"
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version = "2.0.106"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d4d107df263a3013ef9b1879b0df87d706ff80f65a86ea879bd9c31f9b307c2a"
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checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
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dependencies = [
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"proc-macro2",
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"quote",
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@ -417,22 +418,31 @@ dependencies = [
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[[package]]
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name = "tempfile"
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version = "3.24.0"
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version = "3.23.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "655da9c7eb6305c55742045d5a8d2037996d61d8de95806335c7c86ce0f82e9c"
|
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checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
|
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dependencies = [
|
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"fastrand",
|
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"getrandom",
|
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"once_cell",
|
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"rustix 1.1.3",
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"windows-sys 0.61.2",
|
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"rustix 1.1.2",
|
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"windows-sys 0.61.1",
|
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]
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|
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[[package]]
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name = "unicode-ident"
|
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version = "1.0.22"
|
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version = "1.0.19"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
|
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checksum = "f63a545481291138910575129486daeaf8ac54aee4387fe7906919f7830c7d9d"
|
||||
|
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[[package]]
|
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name = "wasi"
|
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version = "0.14.7+wasi-0.2.4"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "883478de20367e224c0090af9cf5f9fa85bed63a95c1abf3afc5c083ebc06e8c"
|
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dependencies = [
|
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"wasip2",
|
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]
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[[package]]
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name = "wasip2"
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@ -457,9 +467,9 @@ dependencies = [
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[[package]]
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name = "windows-link"
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version = "0.2.1"
|
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version = "0.2.0"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
|
||||
checksum = "45e46c0661abb7180e7b9c281db115305d49ca1709ab8242adf09666d2173c65"
|
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|
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[[package]]
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name = "windows-sys"
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@ -472,9 +482,9 @@ dependencies = [
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[[package]]
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name = "windows-sys"
|
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version = "0.61.2"
|
||||
version = "0.61.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
|
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checksum = "6f109e41dd4a3c848907eb83d5a42ea98b3769495597450cf6d153507b166f0f"
|
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dependencies = [
|
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"windows-link",
|
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]
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@ -2,6 +2,7 @@
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name = "nix-bindings-expr"
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version = "0.1.1"
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edition = "2021"
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build = "build.rs"
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license = "LGPL-2.1"
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description = "Rust bindings to Nix expression evaluator"
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repository = "https://github.com/nixops4/nix-bindings-rust"
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@ -19,6 +20,10 @@ ctor = "0.2"
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tempfile = "3.10"
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cstr = "0.2"
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[build-dependencies]
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pkg-config = "0.3"
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nix-bindings-util = { path = "../nix-bindings-util" }
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[lints.rust]
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warnings = "deny"
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dead-code = "allow"
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6
nix-bindings-expr/build.rs
Normal file
6
nix-bindings-expr/build.rs
Normal file
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@ -0,0 +1,6 @@
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use nix_bindings_util::nix_version::emit_version_cfg;
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fn main() {
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let nix_version = pkg_config::probe_library("nix-expr-c").unwrap().version;
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emit_version_cfg(&nix_version, &["2.26"]);
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}
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@ -224,6 +224,8 @@ impl Drop for EvalStateRef {
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/// Provides advanced configuration options for evaluation context setup.
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/// Use [`EvalState::new`] for simple cases or this builder for custom configuration.
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///
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/// Requires Nix 2.26.0 or later.
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///
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/// # Examples
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///
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/// ```rust
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@ -244,11 +246,14 @@ impl Drop for EvalStateRef {
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/// # Ok(())
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/// # }
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/// ```
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#[cfg(nix_at_least = "2.26")]
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pub struct EvalStateBuilder {
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eval_state_builder: *mut raw::eval_state_builder,
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lookup_path: Vec<CString>,
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load_ambient_settings: bool,
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store: Store,
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}
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#[cfg(nix_at_least = "2.26")]
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impl Drop for EvalStateBuilder {
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fn drop(&mut self) {
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unsafe {
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|
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@ -256,6 +261,7 @@ impl Drop for EvalStateBuilder {
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}
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}
|
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}
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#[cfg(nix_at_least = "2.26")]
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impl EvalStateBuilder {
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/// Creates a new [`EvalStateBuilder`].
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pub fn new(store: Store) -> Result<EvalStateBuilder> {
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@ -266,6 +272,7 @@ impl EvalStateBuilder {
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store,
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eval_state_builder,
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lookup_path: Vec::new(),
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load_ambient_settings: true,
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})
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}
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/// Sets the [lookup path](https://nix.dev/manual/nix/latest/language/constructs/lookup-path.html) for Nix expression evaluation.
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|
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@ -281,6 +288,15 @@ impl EvalStateBuilder {
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self.lookup_path = lookup_path;
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Ok(self)
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}
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/// Sets whether to load settings from the ambient environment.
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///
|
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/// When enabled (default), calls `nix_eval_state_builder_load` to load settings
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/// from NIX_CONFIG and other environment variables. When disabled, only the
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/// explicitly configured settings are used.
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pub fn load_ambient_settings(mut self, load: bool) -> Self {
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self.load_ambient_settings = load;
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self
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}
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/// Builds the configured [`EvalState`].
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pub fn build(&self) -> Result<EvalState> {
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// Make sure the library is initialized
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@ -288,6 +304,17 @@ impl EvalStateBuilder {
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let mut context = Context::new();
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// Load settings from global configuration (including readOnlyMode = false).
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// This is necessary for path coercion to work (adding files to the store).
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if self.load_ambient_settings {
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unsafe {
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check_call!(raw::eval_state_builder_load(
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&mut context,
|
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self.eval_state_builder
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))?;
|
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}
|
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}
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|
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// Note: these raw C string pointers borrow from self.lookup_path
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let mut lookup_path: Vec<*const c_char> = self
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.lookup_path
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|
|
@ -1241,6 +1268,12 @@ mod tests {
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|||
#[ctor]
|
||||
fn setup() {
|
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test_init();
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|
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// Configure Nix settings for the test suite
|
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// Set max-call-depth to 1000 (lower than default 10000) for the
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// eval_state_builder_loads_max_call_depth test case, while
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// giving other tests sufficient room for normal evaluation.
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std::env::set_var("NIX_CONFIG", "max-call-depth = 1000");
|
||||
}
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|
||||
/// Run a function while making sure that the current thread is registered with the GC.
|
||||
|
|
@ -2643,4 +2676,172 @@ mod tests {
|
|||
})
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
/// Test for path coercion fix (commit 8f6ec2e, <https://github.com/nixops4/nix-bindings-rust/pull/35>).
|
||||
///
|
||||
/// This test verifies that path coercion works correctly with EvalStateBuilder.
|
||||
/// Path coercion requires readOnlyMode = false, which is loaded from global
|
||||
/// settings by calling eval_state_builder_load().
|
||||
///
|
||||
/// # Background
|
||||
///
|
||||
/// Without the eval_state_builder_load() call, settings from global Nix
|
||||
/// configuration are never loaded, leaving readOnlyMode = true (the default).
|
||||
/// This prevents Nix from adding paths to the store during evaluation,
|
||||
/// which could cause errors like: "error: path '/some/local/path' does not exist"
|
||||
///
|
||||
/// # Test Coverage
|
||||
///
|
||||
/// This test exercises store file creation:
|
||||
/// 1. builtins.toFile successfully creates files in the store
|
||||
/// 2. Files are actually written to /nix/store
|
||||
/// 3. Content is written correctly
|
||||
///
|
||||
/// Note: This test may not reliably fail without the fix in all environments.
|
||||
/// Use eval_state_builder_loads_max_call_depth for a deterministic test.
|
||||
#[test]
|
||||
#[cfg(nix_at_least = "2.26" /* real_path, eval_state_builder_load */)]
|
||||
fn eval_state_builder_path_coercion() {
|
||||
gc_registering_current_thread(|| {
|
||||
let mut store = Store::open(None, HashMap::new()).unwrap();
|
||||
let mut es = EvalStateBuilder::new(store.clone())
|
||||
.unwrap()
|
||||
.build()
|
||||
.unwrap();
|
||||
|
||||
// Use builtins.toFile to create a file in the store.
|
||||
// This operation requires readOnlyMode = false to succeed.
|
||||
let expr = r#"builtins.toFile "test-file.txt" "test content""#;
|
||||
|
||||
// Evaluate the expression
|
||||
let value = es.eval_from_string(expr, "<test>").unwrap();
|
||||
|
||||
// Realise the string to get the path and associated store paths
|
||||
let realised = es.realise_string(&value, false).unwrap();
|
||||
|
||||
// Verify we got exactly one store path
|
||||
assert_eq!(
|
||||
realised.paths.len(),
|
||||
1,
|
||||
"Expected 1 store path, got {}",
|
||||
realised.paths.len()
|
||||
);
|
||||
|
||||
// Get the physical filesystem path for the store path
|
||||
// In a relocated store, this differs from realised.s
|
||||
let physical_path = store.real_path(&realised.paths[0]).unwrap();
|
||||
|
||||
// Verify the store path actually exists on disk
|
||||
assert!(
|
||||
std::path::Path::new(&physical_path).exists(),
|
||||
"Store path should exist: {}",
|
||||
physical_path
|
||||
);
|
||||
|
||||
// Verify the content was written correctly
|
||||
let store_content = std::fs::read_to_string(&physical_path).unwrap();
|
||||
assert_eq!(store_content, "test content");
|
||||
})
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
/// Test that eval_state_builder_load() loads settings.
|
||||
///
|
||||
/// Uses max-call-depth as the test setting. The test suite sets
|
||||
/// max-call-depth = 1000 via NIX_CONFIG in setup() for the purpose of this test case.
|
||||
/// This test creates a recursive function that calls itself 1100 times.
|
||||
///
|
||||
/// - WITH the fix: Settings are loaded, max-call-depth=1000 is enforced,
|
||||
/// recursion fails at depth 1000
|
||||
/// - WITHOUT the fix: Settings aren't loaded, default max-call-depth=10000
|
||||
/// is used, recursion of 1100 succeeds when it should fail
|
||||
///
|
||||
/// Complementary to eval_state_builder_ignores_ambient_when_disabled which verifies
|
||||
/// that ambient settings are NOT loaded when disabled.
|
||||
#[test]
|
||||
#[cfg(nix_at_least = "2.26")]
|
||||
fn eval_state_builder_loads_max_call_depth() {
|
||||
gc_registering_current_thread(|| {
|
||||
let store = Store::open(None, HashMap::new()).unwrap();
|
||||
let mut es = EvalStateBuilder::new(store).unwrap().build().unwrap();
|
||||
|
||||
// Create a recursive function that calls itself 1100 times
|
||||
// This should fail because max-call-depth is 1000 (set in setup())
|
||||
let expr = r#"
|
||||
let
|
||||
recurse = n: if n == 0 then "done" else recurse (n - 1);
|
||||
in
|
||||
recurse 1100
|
||||
"#;
|
||||
|
||||
let result = es.eval_from_string(expr, "<test>");
|
||||
|
||||
match result {
|
||||
Err(e) => {
|
||||
let err_str = e.to_string();
|
||||
assert!(
|
||||
err_str.contains("max-call-depth"),
|
||||
"Expected max-call-depth error, got: {}",
|
||||
err_str
|
||||
);
|
||||
}
|
||||
Ok(_) => {
|
||||
panic!(
|
||||
"Expected recursion to fail with max-call-depth=1000, but it succeeded. \
|
||||
This indicates eval_state_builder_load() was not called."
|
||||
);
|
||||
}
|
||||
}
|
||||
})
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
/// Test that load_ambient_settings(false) ignores the ambient environment.
|
||||
///
|
||||
/// The test suite sets max-call-depth = 1000 via NIX_CONFIG in setup().
|
||||
/// When we disable loading ambient settings, this should be ignored and
|
||||
/// the default max-call-depth = 10000 should be used instead.
|
||||
///
|
||||
/// Complementary to eval_state_builder_loads_max_call_depth which verifies
|
||||
/// that ambient settings ARE loaded when enabled.
|
||||
#[test]
|
||||
#[cfg(nix_at_least = "2.26")]
|
||||
fn eval_state_builder_ignores_ambient_when_disabled() {
|
||||
gc_registering_current_thread(|| {
|
||||
let store = Store::open(None, HashMap::new()).unwrap();
|
||||
let mut es = EvalStateBuilder::new(store)
|
||||
.unwrap()
|
||||
.load_ambient_settings(false)
|
||||
.build()
|
||||
.unwrap();
|
||||
|
||||
// Create a recursive function that calls itself 1100 times
|
||||
// With ambient settings disabled, default max-call-depth=10000 is used,
|
||||
// so this should succeed (unlike eval_state_builder_loads_max_call_depth)
|
||||
let expr = r#"
|
||||
let
|
||||
recurse = n: if n == 0 then "done" else recurse (n - 1);
|
||||
in
|
||||
recurse 1100
|
||||
"#;
|
||||
|
||||
let result = es.eval_from_string(expr, "<test>");
|
||||
|
||||
match result {
|
||||
Ok(value) => {
|
||||
// Success expected - ambient NIX_CONFIG was ignored
|
||||
let result_str = es.require_string(&value).unwrap();
|
||||
assert_eq!(result_str, "done");
|
||||
}
|
||||
Err(e) => {
|
||||
panic!(
|
||||
"Expected recursion to succeed with default max-call-depth=10000, \
|
||||
but it failed: {}. This indicates ambient settings were not ignored.",
|
||||
e
|
||||
);
|
||||
}
|
||||
}
|
||||
})
|
||||
.unwrap();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue