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-rw-r--r--tvix/cli/src/derivation.rs601
1 files changed, 0 insertions, 601 deletions
diff --git a/tvix/cli/src/derivation.rs b/tvix/cli/src/derivation.rs
deleted file mode 100644
index 86a271a3966d..000000000000
--- a/tvix/cli/src/derivation.rs
+++ /dev/null
@@ -1,601 +0,0 @@
-//! Implements `builtins.derivation`, the core of what makes Nix build packages.
-use nix_compat::derivation::{Derivation, Output};
-use nix_compat::nixhash;
-use std::cell::RefCell;
-use std::collections::{btree_map, BTreeSet};
-use std::rc::Rc;
-use tvix_eval::builtin_macros::builtins;
-use tvix_eval::generators::{self, emit_warning_kind, GenCo};
-use tvix_eval::{
-    AddContext, CatchableErrorKind, CoercionKind, ErrorKind, NixAttrs, NixList, Value, WarningKind,
-};
-
-use crate::errors::Error;
-use crate::known_paths::{KnownPaths, PathKind, PathName};
-
-// Constants used for strangely named fields in derivation inputs.
-const STRUCTURED_ATTRS: &str = "__structuredAttrs";
-const IGNORE_NULLS: &str = "__ignoreNulls";
-
-/// Helper function for populating the `drv.outputs` field from a
-/// manually specified set of outputs, instead of the default
-/// `outputs`.
-async fn populate_outputs(
-    co: &GenCo,
-    drv: &mut Derivation,
-    outputs: NixList,
-) -> Result<(), ErrorKind> {
-    // Remove the original default `out` output.
-    drv.outputs.clear();
-
-    for output in outputs {
-        let output_name = generators::request_force(co, output)
-            .await
-            .to_str()
-            .context("determining output name")?;
-
-        if drv
-            .outputs
-            .insert(output_name.as_str().into(), Default::default())
-            .is_some()
-        {
-            return Err(Error::DuplicateOutput(output_name.as_str().into()).into());
-        }
-    }
-
-    Ok(())
-}
-
-/// Populate the inputs of a derivation from the build references
-/// found when scanning the derivation's parameters.
-fn populate_inputs<I: IntoIterator<Item = PathName>>(
-    drv: &mut Derivation,
-    known_paths: &KnownPaths,
-    references: I,
-) {
-    for reference in references.into_iter() {
-        let reference = &known_paths[&reference];
-        match &reference.kind {
-            PathKind::Plain => {
-                drv.input_sources.insert(reference.path.clone());
-            }
-
-            PathKind::Output { name, derivation } => {
-                match drv.input_derivations.entry(derivation.clone()) {
-                    btree_map::Entry::Vacant(entry) => {
-                        entry.insert(BTreeSet::from([name.clone()]));
-                    }
-
-                    btree_map::Entry::Occupied(mut entry) => {
-                        entry.get_mut().insert(name.clone());
-                    }
-                }
-            }
-
-            PathKind::Derivation { output_names } => {
-                match drv.input_derivations.entry(reference.path.clone()) {
-                    btree_map::Entry::Vacant(entry) => {
-                        entry.insert(output_names.clone());
-                    }
-
-                    btree_map::Entry::Occupied(mut entry) => {
-                        entry.get_mut().extend(output_names.clone().into_iter());
-                    }
-                }
-            }
-        }
-    }
-}
-
-/// Populate the output configuration of a derivation based on the
-/// parameters passed to the call, configuring a fixed-output derivation output
-/// if necessary.
-///
-/// This function handles all possible combinations of the
-/// parameters, including invalid ones.
-///
-/// Due to the support for SRI hashes, and how these are passed along to
-/// builtins.derivation, outputHash and outputHashAlgo can have values which
-/// need to be further modified before constructing the Derivation struct.
-///
-/// If outputHashAlgo is an SRI hash, outputHashAlgo must either be an empty
-/// string, or the hash algorithm as specified in the (single) SRI (entry).
-/// SRI strings with multiple hash algorithms are not supported.
-///
-/// In case an SRI string was used, the (single) fixed output is populated
-/// with the hash algo name, and the hash digest is populated with the
-/// (lowercase) hex encoding of the digest.
-///
-/// These values are only rewritten for the outputs, not what's passed to env.
-fn handle_fixed_output(
-    drv: &mut Derivation,
-    hash_str: Option<String>,      // in nix: outputHash
-    hash_algo_str: Option<String>, // in nix: outputHashAlgo
-    hash_mode_str: Option<String>, // in nix: outputHashmode
-) -> Result<(), ErrorKind> {
-    // If outputHash is provided, ensure hash_algo_str is compatible.
-    // If outputHash is not provided, do nothing.
-    if let Some(hash_str) = hash_str {
-        // treat an empty algo as None
-        let hash_algo_str = match hash_algo_str {
-            Some(s) if s.is_empty() => None,
-            Some(s) => Some(s),
-            None => None,
-        };
-
-        // construct a NixHash.
-        let nixhash = nixhash::from_str(&hash_str, hash_algo_str.as_deref())
-            .map_err(Error::InvalidOutputHash)?;
-
-        // construct the fixed output.
-        drv.outputs.insert(
-            "out".to_string(),
-            Output {
-                path: "".to_string(),
-                ca_hash: match hash_mode_str.as_deref() {
-                    None | Some("flat") => Some(nixhash::CAHash::Flat(nixhash)),
-                    Some("recursive") => Some(nixhash::CAHash::Nar(nixhash)),
-                    Some(other) => return Err(Error::InvalidOutputHashMode(other.to_string()))?,
-                },
-            },
-        );
-    }
-    Ok(())
-}
-
-/// Handles derivation parameters which are not just forwarded to
-/// the environment. The return value indicates whether the
-/// parameter should be included in the environment.
-async fn handle_derivation_parameters(
-    drv: &mut Derivation,
-    co: &GenCo,
-    name: &str,
-    value: &Value,
-    val_str: &str,
-) -> Result<Result<bool, CatchableErrorKind>, ErrorKind> {
-    match name {
-        IGNORE_NULLS => return Ok(Ok(false)),
-
-        // Command line arguments to the builder.
-        "args" => {
-            let args = value.to_list()?;
-            for arg in args {
-                match strong_coerce_to_string(co, arg).await? {
-                    Err(cek) => return Ok(Err(cek)),
-                    Ok(s) => drv.arguments.push(s),
-                }
-            }
-
-            // The arguments do not appear in the environment.
-            return Ok(Ok(false));
-        }
-
-        // Explicitly specified drv outputs (instead of default [ "out" ])
-        "outputs" => {
-            let outputs = value
-                .to_list()
-                .context("looking at the `outputs` parameter of the derivation")?;
-
-            populate_outputs(co, drv, outputs).await?;
-        }
-
-        "builder" => {
-            drv.builder = val_str.to_string();
-        }
-
-        "system" => {
-            drv.system = val_str.to_string();
-        }
-
-        _ => {}
-    }
-
-    Ok(Ok(true))
-}
-
-async fn strong_coerce_to_string(
-    co: &GenCo,
-    val: Value,
-) -> Result<Result<String, CatchableErrorKind>, ErrorKind> {
-    let val = generators::request_force(co, val).await;
-    match generators::request_string_coerce(co, val, CoercionKind::Strong).await {
-        Err(cek) => Ok(Err(cek)),
-        Ok(val_str) => Ok(Ok(val_str.as_str().to_string())),
-    }
-}
-
-#[builtins(state = "Rc<RefCell<KnownPaths>>")]
-mod derivation_builtins {
-    use super::*;
-    use nix_compat::store_path::hash_placeholder;
-    use tvix_eval::generators::Gen;
-
-    #[builtin("placeholder")]
-    async fn builtin_placeholder(co: GenCo, input: Value) -> Result<Value, ErrorKind> {
-        let placeholder = hash_placeholder(
-            input
-                .to_str()
-                .context("looking at output name in builtins.placeholder")?
-                .as_str(),
-        );
-
-        Ok(placeholder.into())
-    }
-
-    /// Strictly construct a Nix derivation from the supplied arguments.
-    ///
-    /// This is considered an internal function, users usually want to
-    /// use the higher-level `builtins.derivation` instead.
-    #[builtin("derivationStrict")]
-    async fn builtin_derivation_strict(
-        state: Rc<RefCell<KnownPaths>>,
-        co: GenCo,
-        input: Value,
-    ) -> Result<Value, ErrorKind> {
-        let input = input.to_attrs()?;
-        let name = generators::request_force(&co, input.select_required("name")?.clone())
-            .await
-            .to_str()
-            .context("determining derivation name")?;
-
-        if name.is_empty() {
-            return Err(ErrorKind::Abort("derivation has empty name".to_string()));
-        }
-
-        // Check whether attributes should be passed as a JSON file.
-        // TODO: the JSON serialisation has to happen here.
-        if let Some(sa) = input.select(STRUCTURED_ATTRS) {
-            if generators::request_force(&co, sa.clone()).await.as_bool()? {
-                return Err(ErrorKind::NotImplemented(STRUCTURED_ATTRS));
-            }
-        }
-
-        // Check whether null attributes should be ignored or passed through.
-        let ignore_nulls = match input.select(IGNORE_NULLS) {
-            Some(b) => generators::request_force(&co, b.clone()).await.as_bool()?,
-            None => false,
-        };
-
-        let mut drv = Derivation::default();
-        drv.outputs.insert("out".to_string(), Default::default());
-
-        async fn select_string(
-            co: &GenCo,
-            attrs: &NixAttrs,
-            key: &str,
-        ) -> Result<Result<Option<String>, CatchableErrorKind>, ErrorKind> {
-            if let Some(attr) = attrs.select(key) {
-                match strong_coerce_to_string(co, attr.clone()).await? {
-                    Err(cek) => return Ok(Err(cek)),
-                    Ok(str) => return Ok(Ok(Some(str))),
-                }
-            }
-
-            Ok(Ok(None))
-        }
-
-        for (name, value) in input.clone().into_iter_sorted() {
-            let value = generators::request_force(&co, value).await;
-            if ignore_nulls && matches!(value, Value::Null) {
-                continue;
-            }
-
-            match strong_coerce_to_string(&co, value.clone()).await? {
-                Err(cek) => return Ok(Value::Catchable(cek)),
-                Ok(val_str) => {
-                    // handle_derivation_parameters tells us whether the
-                    // argument should be added to the environment; continue
-                    // to the next one otherwise
-                    match handle_derivation_parameters(
-                        &mut drv,
-                        &co,
-                        name.as_str(),
-                        &value,
-                        &val_str,
-                    )
-                    .await?
-                    {
-                        Err(cek) => return Ok(Value::Catchable(cek)),
-                        Ok(false) => continue,
-                        _ => (),
-                    }
-
-                    // Most of these are also added to the builder's environment in "raw" form.
-                    if drv
-                        .environment
-                        .insert(name.as_str().to_string(), val_str.into())
-                        .is_some()
-                    {
-                        return Err(Error::DuplicateEnvVar(name.as_str().to_string()).into());
-                    }
-                }
-            }
-        }
-
-        // Configure fixed-output derivations if required.
-        {
-            let output_hash = match select_string(&co, &input, "outputHash")
-                .await
-                .context("evaluating the `outputHash` parameter")?
-            {
-                Err(cek) => return Ok(Value::Catchable(cek)),
-                Ok(s) => s,
-            };
-            let output_hash_algo = match select_string(&co, &input, "outputHashAlgo")
-                .await
-                .context("evaluating the `outputHashAlgo` parameter")?
-            {
-                Err(cek) => return Ok(Value::Catchable(cek)),
-                Ok(s) => s,
-            };
-            let output_hash_mode = match select_string(&co, &input, "outputHashMode")
-                .await
-                .context("evaluating the `outputHashMode` parameter")?
-            {
-                Err(cek) => return Ok(Value::Catchable(cek)),
-                Ok(s) => s,
-            };
-            handle_fixed_output(&mut drv, output_hash, output_hash_algo, output_hash_mode)?;
-        }
-
-        // Scan references in relevant attributes to detect any build-references.
-        let references = {
-            let state = state.borrow();
-            if state.is_empty() {
-                // skip reference scanning, create an empty result
-                Default::default()
-            } else {
-                let mut refscan = state.reference_scanner();
-                drv.arguments.iter().for_each(|s| refscan.scan(s));
-                drv.environment.values().for_each(|s| refscan.scan(s));
-                refscan.scan(&drv.builder);
-                refscan.finalise()
-            }
-        };
-
-        // Each output name needs to exist in the environment, at this
-        // point initialised as an empty string because that is the
-        // way of Golang ;)
-        for output in drv.outputs.keys() {
-            if drv
-                .environment
-                .insert(output.to_string(), String::new().into())
-                .is_some()
-            {
-                emit_warning_kind(&co, WarningKind::ShadowedOutput(output.to_string())).await;
-            }
-        }
-
-        let mut known_paths = state.borrow_mut();
-        populate_inputs(&mut drv, &known_paths, references);
-
-        // At this point, derivation fields are fully populated from
-        // eval data structures.
-        drv.validate(false).map_err(Error::InvalidDerivation)?;
-
-        // Calculate the derivation_or_fod_hash for the current derivation.
-        // This one is still intermediate (so not added to known_paths)
-        let derivation_or_fod_hash_tmp =
-            drv.derivation_or_fod_hash(|drv| known_paths.get_hash_derivation_modulo(drv));
-
-        // Mutate the Derivation struct and set output paths
-        drv.calculate_output_paths(&name, &derivation_or_fod_hash_tmp)
-            .map_err(Error::InvalidDerivation)?;
-
-        let derivation_path = drv
-            .calculate_derivation_path(&name)
-            .map_err(Error::InvalidDerivation)?;
-
-        // recompute the hash derivation modulo and add to known_paths
-        let derivation_or_fod_hash_final =
-            drv.derivation_or_fod_hash(|drv| known_paths.get_hash_derivation_modulo(drv));
-
-        known_paths.add_hash_derivation_modulo(
-            derivation_path.to_absolute_path(),
-            &derivation_or_fod_hash_final,
-        );
-
-        // mark all the new paths as known
-        let output_names: Vec<String> = drv.outputs.keys().map(Clone::clone).collect();
-        known_paths.drv(derivation_path.to_absolute_path(), &output_names);
-
-        for (output_name, output) in &drv.outputs {
-            known_paths.output(
-                &output.path,
-                output_name,
-                derivation_path.to_absolute_path(),
-            );
-        }
-
-        let mut new_attrs: Vec<(String, String)> = drv
-            .outputs
-            .into_iter()
-            .map(|(name, output)| (name, output.path))
-            .collect();
-
-        new_attrs.push(("drvPath".to_string(), derivation_path.to_absolute_path()));
-
-        Ok(Value::Attrs(Box::new(NixAttrs::from_iter(
-            new_attrs.into_iter(),
-        ))))
-    }
-
-    #[builtin("toFile")]
-    async fn builtin_to_file(
-        state: Rc<RefCell<KnownPaths>>,
-        co: GenCo,
-        name: Value,
-        content: Value,
-    ) -> Result<Value, ErrorKind> {
-        let name = name
-            .to_str()
-            .context("evaluating the `name` parameter of builtins.toFile")?;
-        let content = content
-            .to_str()
-            .context("evaluating the `content` parameter of builtins.toFile")?;
-
-        let mut refscan = state.borrow().reference_scanner();
-        refscan.scan(content.as_str());
-        let refs = {
-            let paths = state.borrow();
-            refscan
-                .finalise()
-                .into_iter()
-                .map(|path| paths[&path].path.to_string())
-                .collect::<Vec<_>>()
-        };
-
-        // TODO: fail on derivation references (only "plain" is allowed here)
-
-        let path = nix_compat::store_path::build_text_path(name.as_str(), content.as_str(), refs)
-            .map_err(|_e| {
-                nix_compat::derivation::DerivationError::InvalidOutputName(
-                    name.as_str().to_string(),
-                )
-            })
-            .map_err(Error::InvalidDerivation)?
-            .to_absolute_path();
-
-        state.borrow_mut().plain(&path);
-
-        // TODO: actually persist the file in the store at that path ...
-
-        Ok(Value::String(path.into()))
-    }
-}
-
-pub use derivation_builtins::builtins as derivation_builtins;
-
-#[cfg(test)]
-mod tests {
-    use crate::known_paths::KnownPaths;
-    use nix_compat::store_path::hash_placeholder;
-    use std::{cell::RefCell, rc::Rc};
-    use test_case::test_case;
-    use tvix_eval::EvaluationResult;
-
-    /// evaluates a given nix expression and returns the result.
-    /// Takes care of setting up the evaluator so it knows about the
-    // `derivation` builtin.
-    fn eval(str: &str) -> EvaluationResult {
-        let mut eval = tvix_eval::Evaluation::new_impure(str, None);
-
-        let known_paths: Rc<RefCell<KnownPaths>> = Default::default();
-
-        eval.builtins
-            .extend(crate::derivation::derivation_builtins(known_paths));
-
-        // Add the actual `builtins.derivation` from compiled Nix code
-        eval.src_builtins
-            .push(("derivation", include_str!("derivation.nix")));
-
-        // run the evaluation itself.
-        eval.evaluate()
-    }
-
-    #[test]
-    fn derivation() {
-        let result = eval(
-            r#"(derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux";}).outPath"#,
-        );
-
-        assert!(result.errors.is_empty(), "expect evaluation to succeed");
-        let value = result.value.expect("must be some");
-
-        match value {
-            tvix_eval::Value::String(s) => {
-                assert_eq!(
-                    "/nix/store/xpcvxsx5sw4rbq666blz6sxqlmsqphmr-foo",
-                    s.as_str()
-                );
-            }
-            _ => panic!("unexpected value type: {:?}", value),
-        }
-    }
-
-    /// a derivation with an empty name is an error.
-    #[test]
-    fn derivation_empty_name_fail() {
-        let result = eval(
-            r#"(derivation { name = ""; builder = "/bin/sh"; system = "x86_64-linux";}).outPath"#,
-        );
-
-        assert!(!result.errors.is_empty(), "expect evaluation to fail");
-    }
-
-    /// construct some calls to builtins.derivation and compare produced output
-    /// paths.
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/17wgs52s7kcamcyin4ja58njkf91ipq8-foo"; "r:sha256")]
-    #[test_case(r#"(builtins.derivation { name = "foo2"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/gi0p8vd635vpk1nq029cz3aa3jkhar5k-foo2"; "r:sha256 other name")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha1"; outputHash = "sha1-VUCRC+16gU5lcrLYHlPSUyx0Y/Q="; }).outPath"#, "/nix/store/p5sammmhpa84ama7ymkbgwwzrilva24x-foo"; "r:sha1")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "md5"; outputHash = "md5-07BzhNET7exJ6qYjitX/AA=="; }).outPath"#, "/nix/store/gmmxgpy1jrzs86r5y05wy6wiy2m15xgi-foo"; "r:md5")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha512"; outputHash = "sha512-DPkYCnZKuoY6Z7bXLwkYvBMcZ3JkLLLc5aNPCnAvlHDdwr8SXBIZixmVwjPDS0r9NGxUojNMNQqUilG26LTmtg=="; }).outPath"#, "/nix/store/lfi2bfyyap88y45mfdwi4j99gkaxaj19-foo"; "r:sha512")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "4374173a8cbe88de152b609f96f46e958bcf65762017474eec5a05ec2bd61530"; }).outPath"#, "/nix/store/17wgs52s7kcamcyin4ja58njkf91ipq8-foo"; "r:sha256 base16")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "0c0msqmyq1asxi74f5r0frjwz2wmdvs9d7v05caxx25yihx1fx23"; }).outPath"#, "/nix/store/17wgs52s7kcamcyin4ja58njkf91ipq8-foo"; "r:sha256 nixbase32")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/17wgs52s7kcamcyin4ja58njkf91ipq8-foo"; "r:sha256 base64")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "sha256-fgIr3TyFGDAXP5+qoAaiMKDg/a1MlT6Fv/S/DaA24S8="; }).outPath"#, "/nix/store/xm1l9dx4zgycv9qdhcqqvji1z88z534b-foo"; "r:sha256 base64 nopad")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "flat"; outputHashAlgo = "sha256"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/q4pkwkxdib797fhk22p0k3g1q32jmxvf-foo"; "sha256")]
-    #[test_case(r#"(builtins.derivation { name = "foo2"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "flat"; outputHashAlgo = "sha256"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/znw17xlmx9r6gw8izjkqxkl6s28sza4l-foo2"; "sha256 other name")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "flat"; outputHashAlgo = "sha1"; outputHash = "sha1-VUCRC+16gU5lcrLYHlPSUyx0Y/Q="; }).outPath"#, "/nix/store/zgpnjjmga53d8srp8chh3m9fn7nnbdv6-foo"; "sha1")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "flat"; outputHashAlgo = "md5"; outputHash = "md5-07BzhNET7exJ6qYjitX/AA=="; }).outPath"#, "/nix/store/jfhcwnq1852ccy9ad9nakybp2wadngnd-foo"; "md5")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "flat"; outputHashAlgo = "sha512"; outputHash = "sha512-DPkYCnZKuoY6Z7bXLwkYvBMcZ3JkLLLc5aNPCnAvlHDdwr8SXBIZixmVwjPDS0r9NGxUojNMNQqUilG26LTmtg=="; }).outPath"#, "/nix/store/as736rr116ian9qzg457f96j52ki8bm3-foo"; "sha512")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/17wgs52s7kcamcyin4ja58njkf91ipq8-foo"; "r:sha256 outputHashAlgo omitted")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#, "/nix/store/q4pkwkxdib797fhk22p0k3g1q32jmxvf-foo"; "r:sha256 outputHashAlgo and outputHashMode omitted")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; }).outPath"#, "/nix/store/xpcvxsx5sw4rbq666blz6sxqlmsqphmr-foo"; "outputHash* omitted")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; outputs = ["foo" "bar"]; system = "x86_64-linux"; }).outPath"#, "/nix/store/hkwdinvz2jpzgnjy9lv34d2zxvclj4s3-foo-foo"; "multiple outputs")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; args = ["--foo" "42" "--bar"]; system = "x86_64-linux"; }).outPath"#, "/nix/store/365gi78n2z7vwc1bvgb98k0a9cqfp6as-foo"; "args")]
-    #[test_case(r#"
-                   let
-                     bar = builtins.derivation {
-                       name = "bar";
-                       builder = ":";
-                       system = ":";
-                       outputHash = "08813cbee9903c62be4c5027726a418a300da4500b2d369d3af9286f4815ceba";
-                       outputHashAlgo = "sha256";
-                       outputHashMode = "recursive";
-                     };
-                   in
-                   (builtins.derivation {
-                     name = "foo";
-                     builder = ":";
-                     system = ":";
-                     inherit bar;
-                   }).outPath
-        "#, "/nix/store/5vyvcwah9l9kf07d52rcgdk70g2f4y13-foo"; "full")]
-    fn test_outpath(code: &str, expected_path: &str) {
-        let value = eval(code).value.expect("must succeed");
-
-        match value {
-            tvix_eval::Value::String(s) => {
-                assert_eq!(expected_path, s.as_str());
-            }
-            _ => panic!("unexpected value type: {:?}", value),
-        }
-    }
-
-    /// construct some calls to builtins.derivation that should be rejected
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "sha256-00"; }).outPath"#; "invalid outputhash")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; system = "x86_64-linux"; outputHashMode = "recursive"; outputHashAlgo = "sha1"; outputHash = "sha256-Q3QXOoy+iN4VK2CflvRulYvPZXYgF0dO7FoF7CvWFTA="; }).outPath"#; "sha1 and sha256")]
-    #[test_case(r#"(builtins.derivation { name = "foo"; builder = "/bin/sh"; outputs = ["foo" "foo"]; system = "x86_64-linux"; }).outPath"#; "duplicate output names")]
-    fn test_outpath_invalid(code: &str) {
-        let resp = eval(code);
-        assert!(resp.value.is_none(), "Value should be None");
-        assert!(
-            !resp.errors.is_empty(),
-            "There should have been some errors"
-        );
-    }
-
-    #[test]
-    fn builtins_placeholder_hashes() {
-        assert_eq!(
-            hash_placeholder("out").as_str(),
-            "/1rz4g4znpzjwh1xymhjpm42vipw92pr73vdgl6xs1hycac8kf2n9"
-        );
-
-        assert_eq!(
-            hash_placeholder("").as_str(),
-            "/171rf4jhx57xqz3p7swniwkig249cif71pa08p80mgaf0mqz5bmr"
-        );
-    }
-}