fix: satisfy when there is not pypi packages in the lockfile

src/lock_file/satisfiability.rs

@@ -258,9 +258,14 @@ pub fn verify_environment_satisfiability(
         let indexes = rattler_lock::PypiIndexes::from(grouped_env.pypi_options());
         match locked_environment.pypi_indexes() {
             None => {
+                // Mismatch when there should be an index but there is not
                 if locked_environment
                     .version()
                     .should_pypi_indexes_be_present()
+                    && locked_environment
+                        .pypi_packages()
+                        .iter()
+                        .any(|(_platform, packages)| !packages.is_empty())
                 {
                     return Err(IndexesMismatch {
                         current: indexes,
@@ -1199,4 +1204,54 @@ mod tests {
         // This should satisfy:
         assert!(pypi_satifisfies_requirement(&spec, &locked_data));
     }
+
+    // Test if the lockfile satisfies when pypi-dependencies are defined but all overwritten by conda deps.
+    #[test]
+    fn test_satisfiability_with_pypi_deps_no_pypi_install() {
+        let manifest = r#"
+        [project]
+        name = "test"
+        channels = ["https://fast.prefix.dev/conda-forge"]
+        platforms = ["linux-64"]
+
+        [dependencies]
+        ruff = "*"
+
+        [pypi-dependencies]
+        ruff = "*"
+        "#;
+
+        // Fake lockfile that satisfies the manifest
+        let lockfile = r#"
+version: 5
+environments:
+  default:
+    channels:
+    - url: https://fast.prefix.dev/conda-forge/
+    packages:
+      linux-64:
+      - conda: https://conda.anaconda.org/conda-forge/linux-64/ruff-0.5.7-py312hbe4c86d_0.conda
+packages:
+- kind: conda
+  name: ruff
+  version: 0.5.7
+  build: py312hbe4c86d_0
+  subdir: linux-64
+  url: https://conda.anaconda.org/conda-forge/linux-64/ruff-0.5.7-py312hbe4c86d_0.conda
+  sha256: b8cc83042471c5740f29a5f3ce1ef7116b892095591907929671fe4e33345026
+  md5: 8871e1b8e5ec1c57d3769adc0b9e5d68
+  constrains:
+  - __glibc >=2.17
+  license: MIT
+  license_family: MIT
+  purls:
+  - pkg:pypi/ruff?source=hash-mapping
+  size: 7184746
+  timestamp: 1723150552013
+        "#;
+
+        let project = Project::from_str(Path::new("pixi.toml"), manifest).unwrap();
+        let lock = LockFile::from_str(lockfile).unwrap();
+        verify_lockfile_satisfiability(&project, &lock).unwrap();
+    }
 }

tests/add_tests.rs

@@ -2,6 +2,11 @@ mod common;
 
 use std::str::FromStr;
 
+use crate::common::{
+    builders::{HasDependencyConfig, HasPrefixUpdateConfig},
+    package_database::{Package, PackageDatabase},
+    LockFileExt, PixiControl,
+};
 use pixi::{DependencyType, Project};
 use pixi_consts::consts;
 use pixi_manifest::{pypi::PyPiPackageName, FeaturesExt, SpecType};
@@ -10,12 +15,6 @@ use serial_test::serial;
 use tempfile::TempDir;
 use uv_normalize::ExtraName;
 
-use crate::common::{
-    builders::{HasDependencyConfig, HasPrefixUpdateConfig},
-    package_database::{Package, PackageDatabase},
-    LockFileExt, PixiControl,
-};
-
 /// Test add functionality for different types of packages.
 /// Run, dev, build
 #[tokio::test]