Fix GraalPy abi tag parsing and discovery (#12154)

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## Summary

There were no GraalPy binary wheels were available when uv support was
added, and thus the abi tag was never tested against actual packages.
Now that GraalPy publishes binary wheels to
https://www.graalvm.org/python/wheels/ we noticed the abi tag was
incorrect and the version info incorrectly determined.

## Test Plan

I tested manually:

```
> target/debug/uv venv --python graalpy testvenv
Using GraalPy 3.11.7 interpreter at: /home/tim/.pyenv/versions/graalpy-24.1.1/bin/graalpy
Creating virtual environment at: testvenv
Activate with: source testvenv/bin/activate
> cat <<EOF> uv.toml
> [[index]]
> url = "https://www.graalvm.org/python/wheels/"
> EOF
> target/debug/uv -v pip install psutil
warning: Found both a `uv.toml` file and a `[tool.uv]` section in an adjacent `pyproject.toml`. The `[tool.uv]` section will be ignored in favor of the `uv.toml` file.
DEBUG uv 0.6.6+3 (be87255 2025-03-13)
DEBUG Searching for default Python interpreter in virtual environments
DEBUG Found `graalpy-3.11.7-linux-x86_64-gnu` at `/home/tim/dev/uv/.venv/bin/python3` (virtual environment)
DEBUG Using Python 3.11.7 environment at: .venv
DEBUG Acquired lock for `.venv`
DEBUG At least one requirement is not satisfied: psutil
DEBUG Using request timeout of 30s
DEBUG Solving with installed Python version: 3.11.7
DEBUG Solving with target Python version: >=3.11.7
DEBUG Adding direct dependency: psutil*
DEBUG Found fresh response for: https://www.graalvm.org/python/wheels/psutil/
DEBUG Searching for a compatible version of psutil (*)
DEBUG Selecting: psutil==5.9.8 [compatible] (psutil-5.9.8-graalpy311-graalpy241_311_native-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl)
DEBUG No cache entry for: https://gds.oracle.com/download/graalpy-wheels/psutil-5.9.8-graalpy311-graalpy241_311_native-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl
DEBUG Tried 1 versions: psutil 1
DEBUG marker environment resolution took 0.968s
Resolved 1 package in 971ms
DEBUG Identified uncached distribution: psutil==5.9.8
DEBUG No cache entry for: https://gds.oracle.com/download/graalpy-wheels/psutil-5.9.8-graalpy311-graalpy241_311_native-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_28_x86_64.whl
Prepared 1 package in 268ms
Installed 1 package in 28ms
 + psutil==5.9.8
DEBUG Released lock at `/home/tim/dev/uv/.venv/.lock`
```

---------

Co-authored-by: Charlie Marsh <[email protected]>

Author: timfel

crates/uv-platform-tags/src/abi_tag.rs

@@ -34,7 +34,7 @@ pub enum AbiTag {
         python_version: Option<(u8, u8)>,
         implementation_version: (u8, u8),
     },
-    /// Ex) `graalpy310_graalpy240_310_native`
+    /// Ex) `graalpy240_310_native`
     GraalPy {
         python_version: (u8, u8),
         implementation_version: (u8, u8),
@@ -109,7 +109,7 @@ impl std::fmt::Display for AbiTag {
             } => {
                 write!(
                     f,
-                    "graalpy{py_major}{py_minor}_graalpy{impl_major}{impl_minor}_{py_major}{py_minor}_native"
+                    "graalpy{impl_major}{impl_minor}_{py_major}{py_minor}_native"
                 )
             }
             Self::Pyston {
@@ -237,29 +237,21 @@ impl FromStr for AbiTag {
                 })
             }
         } else if let Some(rest) = s.strip_prefix("graalpy") {
-            // Ex) `graalpy310_graalpy240_310_native`
-            let version_end = rest
-                .find('_')
-                .ok_or_else(|| ParseAbiTagError::InvalidFormat {
-                    implementation: "GraalPy",
-                    tag: s.to_string(),
-                })?;
-            let version_str = &rest[..version_end];
-            let (major, minor) = parse_python_version(version_str, "GraalPy", s)?;
-            let rest = rest[version_end + 1..]
-                .strip_prefix("graalpy")
-                .ok_or_else(|| ParseAbiTagError::InvalidFormat {
-                    implementation: "GraalPy",
-                    tag: s.to_string(),
-                })?;
-            let version_end = rest
-                .find('_')
-                .ok_or_else(|| ParseAbiTagError::InvalidFormat {
-                    implementation: "GraalPy",
-                    tag: s.to_string(),
-                })?;
-            let rest = &rest[..version_end];
-            let (impl_major, impl_minor) = parse_impl_version(rest, "GraalPy", s)?;
+            // Ex) `graalpy240_310_native`
+            let (impl_ver_str, rest) =
+                rest.split_once('_')
+                    .ok_or_else(|| ParseAbiTagError::InvalidFormat {
+                        implementation: "GraalPy",
+                        tag: s.to_string(),
+                    })?;
+            let (impl_major, impl_minor) = parse_impl_version(impl_ver_str, "GraalPy", s)?;
+            let (py_ver_str, _) =
+                rest.split_once('_')
+                    .ok_or_else(|| ParseAbiTagError::InvalidFormat {
+                        implementation: "GraalPy",
+                        tag: s.to_string(),
+                    })?;
+            let (major, minor) = parse_python_version(py_ver_str, "GraalPy", s)?;
             Ok(Self::GraalPy {
                 python_version: (major, minor),
                 implementation_version: (impl_major, impl_minor),
@@ -434,11 +426,8 @@ mod tests {
             python_version: (3, 10),
             implementation_version: (2, 40),
         };
-        assert_eq!(
-            AbiTag::from_str("graalpy310_graalpy240_310_native"),
-            Ok(tag)
-        );
-        assert_eq!(tag.to_string(), "graalpy310_graalpy240_310_native");
+        assert_eq!(AbiTag::from_str("graalpy240_310_native"), Ok(tag));
+        assert_eq!(tag.to_string(), "graalpy240_310_native");
 
         assert_eq!(
             AbiTag::from_str("graalpy310"),

crates/uv-platform-tags/src/tags.rs

@@ -395,7 +395,7 @@ impl Implementation {
                 python_version: Some(python_version),
                 implementation_version,
             },
-            // Ex) `graalpy310_graalpy240_310_native
+            // Ex) `graalpy240_310_native
             Self::GraalPy => AbiTag::GraalPy {
                 python_version,
                 implementation_version,

crates/uv-python/python/get_interpreter_info.py

@@ -34,8 +34,18 @@ def format_full_version(info):
     sys.exit(0)
 
 if hasattr(sys, "implementation"):
-    implementation_version = format_full_version(sys.implementation.version)
     implementation_name = sys.implementation.name
+    if implementation_name == "graalpy":
+        # GraalPy reports the CPython version as sys.implementation.version,
+        # so we need to discover the GraalPy version from the cache_tag
+        import re
+        implementation_version = re.sub(
+            r"graalpy(\d)(\d+)-\d+",
+            r"\1.\2",
+            sys.implementation.cache_tag
+        )
+    else:
+        implementation_version = format_full_version(sys.implementation.version)
 else:
     implementation_version = "0"
     implementation_name = ""

crates/uv/tests/it/common/mod.rs

@@ -32,7 +32,7 @@ use uv_static::EnvVars;
 // Exclude any packages uploaded after this date.
 static EXCLUDE_NEWER: &str = "2024-03-25T00:00:00Z";
 
-pub const PACKSE_VERSION: &str = "0.3.45";
+pub const PACKSE_VERSION: &str = "0.3.46";
 
 /// Using a find links url allows using `--index-url` instead of `--extra-index-url` in tests
 /// to prevent dependency confusion attacks against our test suite.

crates/uv/tests/it/pip_install_scenarios.rs

@@ -4091,7 +4091,7 @@ fn no_sdist_no_wheels_with_matching_abi() {
       ╰─▶ Because only package-a==1.0.0 is available and package-a==1.0.0 has no wheels with a matching Python ABI tag (e.g., `cp38`), we can conclude that all versions of package-a cannot be used.
           And because you require package-a, we can conclude that your requirements are unsatisfiable.
 
-          hint: You require CPython 3.8 (`cp38`), but we only found wheels for `package-a` (v1.0.0) with the following Python ABI tag: `graalpy310_graalpy240_310_native`
+          hint: You require CPython 3.8 (`cp38`), but we only found wheels for `package-a` (v1.0.0) with the following Python ABI tag: `graalpy240_310_native`
     "###);
 
     assert_not_installed(