diff --git a/Cargo.lock b/Cargo.lock
index 7e3d620..52c2e23 100755
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -418,7 +418,7 @@ checksum = "807800ff3288b621186fe0a8f3392c4652068257302709c24efd918c3dffcdc2"
 
 [[package]]
 name = "depot"
-version = "0.15.2"
+version = "0.16.0"
 dependencies = [
  "anyhow",
  "ar",
@@ -433,6 +433,8 @@ dependencies = [
  "git2",
  "indicatif",
  "inquire",
+ "lz4_flex",
+ "lzma-rust2",
  "md5",
  "minisign",
  "nix",
@@ -1299,6 +1301,15 @@ version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
+[[package]]
+name = "lz4_flex"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab6473172471198271ff72e9379150e9dfd70d8e533e0752a27e515b48dd375e"
+dependencies = [
+ "twox-hash",
+]
+
 [[package]]
 name = "lzma-rust2"
 version = "0.16.2"
@@ -2358,6 +2369,12 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "twox-hash"
+version = "2.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ea3136b675547379c4bd395ca6b938e5ad3c3d20fad76e7fe85f9e0d011419c"
+
 [[package]]
 name = "typed-path"
 version = "0.12.3"
diff --git a/Cargo.toml b/Cargo.toml
index 8ce2d6f..34358c0 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "depot"
-version = "0.15.2"
+version = "0.16.0"
 edition = "2024"
 
 [lints.rust]
@@ -43,6 +43,8 @@ sys-mount = { version = "3.1.0", default-features = false }
 time = { version = "0.3.47", features = ["formatting", "parsing"] }
 b2sum-rust = "0.3.0"
 serde_ignored = "0.1.14"
+lz4_flex = "0.12.0"
+lzma-rust2 = "0.16.2"
 
 [dev-dependencies]
 tempfile = "=3.27.0"
diff --git a/meson.build b/meson.build
index 5d2ad13..bbcf0c3 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project(
   'depot',
-  version: '0.15.2',
+  version: '0.16.0',
   meson_version: '>=0.60.0',
 )
 
diff --git a/src/builder/cmake.rs b/src/builder/cmake.rs
index 754cddf..7d7890d 100755
--- a/src/builder/cmake.rs
+++ b/src/builder/cmake.rs
@@ -128,7 +128,7 @@ pub fn build(
             crate::log_info!("Skipping tests: disabled by build.flags.skip_tests");
         } else {
             let test_targets = phase_targets(&flags.make_test_target, &flags.make_test_targets);
-            if !test_targets.is_empty() {
+            if !cmake_uses_default_ctest(flags) {
                 let joined = test_targets.join(" ");
                 crate::log_info!("Running cmake test target(s): {}...", joined);
                 let mut test_cmd = Command::new("cmake");
@@ -149,7 +149,20 @@ pub fn build(
                     anyhow::bail!("cmake test target(s) '{}' failed", joined);
                 }
             } else {
-                crate::log_info!("Skipping tests: no build.flags.make_test_target(s) for cmake");
+                crate::log_info!("Running ctest...");
+                let mut test_cmd = Command::new("ctest");
+                test_cmd.current_dir(&build_dir);
+                test_cmd.arg("--test-dir").arg(&build_dir);
+                test_cmd.arg("-j").arg(num_cpus().to_string());
+                test_cmd.arg("--output-on-failure");
+                crate::builder::prepare_tool_command(&mut test_cmd, &env_vars);
+
+                let status = test_cmd
+                    .status()
+                    .with_context(|| format!("Failed to run ctest for {}", spec.package.name))?;
+                if !status.success() {
+                    anyhow::bail!("ctest failed");
+                }
             }
         }
 
@@ -251,6 +264,10 @@ fn phase_targets(single: &str, many: &[String]) -> Vec<String> {
     targets
 }
 
+fn cmake_uses_default_ctest(flags: &crate::package::BuildFlags) -> bool {
+    phase_targets(&flags.make_test_target, &flags.make_test_targets).is_empty()
+}
+
 fn cmake_generator_for_make_exec(make_exec: &str) -> Option<&'static str> {
     let tool = Path::new(make_exec)
         .file_name()
@@ -434,6 +451,23 @@ mod tests {
         assert!(phase_targets("", &[]).is_empty());
     }
 
+    #[test]
+    fn test_cmake_uses_default_ctest_without_explicit_targets() {
+        assert!(cmake_uses_default_ctest(&BuildFlags::default()));
+
+        let explicit_single = BuildFlags {
+            make_test_target: "test".into(),
+            ..BuildFlags::default()
+        };
+        assert!(!cmake_uses_default_ctest(&explicit_single));
+
+        let explicit_many = BuildFlags {
+            make_test_targets: vec!["check".into()],
+            ..BuildFlags::default()
+        };
+        assert!(!cmake_uses_default_ctest(&explicit_many));
+    }
+
     #[test]
     fn test_cmake_generator_for_make_exec_detects_ninja_and_make() {
         assert_eq!(cmake_generator_for_make_exec("ninja"), Some("Ninja"));
diff --git a/src/builder/meson.rs b/src/builder/meson.rs
index a34d59f..6c533e8 100755
--- a/src/builder/meson.rs
+++ b/src/builder/meson.rs
@@ -83,6 +83,36 @@ pub fn build(
             anyhow::bail!("ninja build failed");
         }
 
+        if flags.skip_tests {
+            crate::log_info!("Skipping tests: disabled by build.flags.skip_tests");
+        } else {
+            let test_suites = meson_test_suites(flags);
+            if test_suites.is_empty() {
+                crate::log_info!("Running meson test...");
+            } else {
+                crate::log_info!("Running meson test suite(s): {}...", test_suites.join(" "));
+            }
+
+            let mut test_cmd = Command::new("meson");
+            test_cmd.current_dir(&build_dir);
+            test_cmd.arg("test");
+            test_cmd.arg("-C").arg(&build_dir);
+            test_cmd.arg("--num-processes").arg(num_cpus().to_string());
+            test_cmd.arg("--print-errorlogs");
+            for suite in &test_suites {
+                test_cmd.arg("--suite").arg(suite);
+            }
+
+            crate::builder::prepare_tool_command(&mut test_cmd, &env_vars);
+
+            let status = test_cmd
+                .status()
+                .with_context(|| format!("Failed to run meson test for {}", spec.package.name))?;
+            if !status.success() {
+                anyhow::bail!("meson test failed");
+            }
+        }
+
         crate::source::hooks::run_post_compile_commands(spec, &actual_src, destdir)?;
         state.mark_done(BuildStep::PostCompileDone)?;
     } else {
@@ -146,6 +176,21 @@ fn resolve_build_dir(actual_src: &Path, flags: &crate::package::BuildFlags) -> P
     }
 }
 
+fn meson_test_suites(flags: &crate::package::BuildFlags) -> Vec<String> {
+    let mut suites = Vec::new();
+    let single = flags.make_test_target.trim();
+    if !single.is_empty() {
+        suites.push(single.to_string());
+    }
+    for suite in &flags.make_test_targets {
+        let trimmed = suite.trim();
+        if !trimmed.is_empty() {
+            suites.push(trimmed.to_string());
+        }
+    }
+    suites
+}
+
 fn has_option(configure: &[String], long: &str) -> bool {
     let prefix = format!("{long}=");
     for arg in configure {
@@ -407,6 +452,28 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_meson_test_suites_uses_single_and_multiple_targets() {
+        let flags = BuildFlags {
+            make_test_target: "unit".to_string(),
+            make_test_targets: vec!["integration".to_string(), " smoke ".to_string()],
+            ..BuildFlags::default()
+        };
+        assert_eq!(
+            meson_test_suites(&flags),
+            vec![
+                "unit".to_string(),
+                "integration".to_string(),
+                "smoke".to_string()
+            ]
+        );
+    }
+
+    #[test]
+    fn test_meson_test_suites_empty_without_targets() {
+        assert!(meson_test_suites(&BuildFlags::default()).is_empty());
+    }
+
     #[test]
     fn test_resolve_actual_src_uses_source_subdir_under_source() -> Result<()> {
         let src = tempdir()?;
diff --git a/src/commands.rs b/src/commands.rs
index 3702ba3..f046a35 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -489,10 +489,13 @@ fn extract_package_archive_to_staging(
     Ok(tmp_dir)
 }
 
-fn build_type_runs_automatic_tests(build_type: package::BuildType) -> bool {
+fn build_type_runs_automatic_tests(spec: &package::PackageSpec) -> bool {
     matches!(
-        build_type,
-        package::BuildType::Autotools | package::BuildType::CMake | package::BuildType::Perl
+        spec.build.build_type,
+        package::BuildType::Autotools
+            | package::BuildType::CMake
+            | package::BuildType::Meson
+            | package::BuildType::Perl
     )
 }
 
@@ -501,7 +504,7 @@ fn maybe_disable_tests_for_missing_deps(
     db_path: &Path,
 ) -> Result<()> {
     if pkg_spec.build.flags.skip_tests
-        || !build_type_runs_automatic_tests(pkg_spec.build.build_type)
+        || !build_type_runs_automatic_tests(pkg_spec)
         || pkg_spec.dependencies.test.is_empty()
     {
         return Ok(());
@@ -4435,6 +4438,48 @@ pub fn run(cli: Cli) -> Result<()> {
 #[cfg(test)]
 mod tests {
     use super::*;
+
+    fn test_package_spec(
+        build_type: package::BuildType,
+        make_test_target: Option<&str>,
+        make_test_targets: &[&str],
+    ) -> package::PackageSpec {
+        let mut flags = package::BuildFlags::default();
+        if let Some(target) = make_test_target {
+            flags.make_test_target = target.to_string();
+        }
+        flags.make_test_targets = make_test_targets
+            .iter()
+            .map(|target| (*target).to_string())
+            .collect();
+
+        package::PackageSpec {
+            package: package::PackageInfo {
+                name: "pkg".into(),
+                version: "1.0".into(),
+                revision: 1,
+                description: "d".into(),
+                homepage: "h".into(),
+                license: vec!["MIT".into()],
+            },
+            packages: Vec::new(),
+            alternatives: Default::default(),
+            manual_sources: Vec::new(),
+            source: vec![package::Source {
+                url: "https://example.test/pkg.tar.gz".into(),
+                sha256: "skip".into(),
+                extract_dir: "pkg".into(),
+                patches: Vec::new(),
+                post_extract: Vec::new(),
+                cherry_pick: Vec::new(),
+            }],
+            build: package::Build { build_type, flags },
+            dependencies: package::Dependencies::default(),
+            package_alternatives: Default::default(),
+            package_dependencies: Default::default(),
+            spec_dir: PathBuf::from("."),
+        }
+    }
     use anyhow::Context;
     use std::io::Write;
 
@@ -5450,6 +5495,30 @@ optional = []
         assert_eq!(install_success_action(true), "updated");
     }
 
+    #[test]
+    fn build_type_runs_automatic_tests_matches_builder_behavior() {
+        assert!(build_type_runs_automatic_tests(&test_package_spec(
+            package::BuildType::Autotools,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_package_spec(
+            package::BuildType::Perl,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_package_spec(
+            package::BuildType::Meson,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_package_spec(
+            package::BuildType::CMake,
+            None,
+            &[]
+        )));
+    }
+
     #[test]
     fn rootfs_is_system_root_detects_live_rootfs() {
         assert!(rootfs_is_system_root(Path::new("/")));
diff --git a/src/deps.rs b/src/deps.rs
index fadd9a2..9b083ea 100755
--- a/src/deps.rs
+++ b/src/deps.rs
@@ -142,7 +142,7 @@ fn is_dep_satisfied(
 fn build_type_runs_automatic_tests(spec: &PackageSpec) -> bool {
     matches!(
         spec.build.build_type,
-        BuildType::Autotools | BuildType::CMake | BuildType::Perl
+        BuildType::Autotools | BuildType::CMake | BuildType::Meson | BuildType::Perl
     )
 }
 
@@ -324,6 +324,47 @@ pub fn require_test_deps(spec: &PackageSpec, db_path: &Path) -> Result<()> {
 mod tests {
     use super::*;
 
+    fn test_spec_with_build(
+        build_type: BuildType,
+        configure_test_target: Option<&str>,
+        configure_test_targets: &[&str],
+    ) -> PackageSpec {
+        let mut flags = crate::package::BuildFlags::default();
+        if let Some(target) = configure_test_target {
+            flags.make_test_target = target.to_string();
+        }
+        flags.make_test_targets = configure_test_targets
+            .iter()
+            .map(|target| (*target).to_string())
+            .collect();
+        PackageSpec {
+            package: crate::package::PackageInfo {
+                name: "foo".into(),
+                version: "1.0".into(),
+                revision: 1,
+                description: "d".into(),
+                homepage: "h".into(),
+                license: vec!["MIT".into()],
+            },
+            packages: Vec::new(),
+            alternatives: Default::default(),
+            manual_sources: Vec::new(),
+            source: vec![crate::package::Source {
+                url: "https://example.test/foo.tar.gz".into(),
+                sha256: "skip".into(),
+                extract_dir: "foo".into(),
+                patches: Vec::new(),
+                post_extract: Vec::new(),
+                cherry_pick: Vec::new(),
+            }],
+            build: crate::package::Build { build_type, flags },
+            dependencies: crate::package::Dependencies::default(),
+            package_alternatives: Default::default(),
+            package_dependencies: Default::default(),
+            spec_dir: std::path::PathBuf::from("."),
+        }
+    }
+
     #[test]
     fn test_parse_dep() {
         let cases = vec![
@@ -506,4 +547,28 @@ mod tests {
         let missing = check_runtime_deps(&spec, Path::new("/definitely/not/a/real/db")).unwrap();
         assert_eq!(missing, vec!["python".to_string()]);
     }
+
+    #[test]
+    fn test_build_type_runs_automatic_tests_matches_builder_behavior() {
+        assert!(build_type_runs_automatic_tests(&test_spec_with_build(
+            BuildType::Autotools,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_spec_with_build(
+            BuildType::Perl,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_spec_with_build(
+            BuildType::Meson,
+            None,
+            &[]
+        )));
+        assert!(build_type_runs_automatic_tests(&test_spec_with_build(
+            BuildType::CMake,
+            None,
+            &[]
+        )));
+    }
 }
diff --git a/src/source/extractor.rs b/src/source/extractor.rs
index e9852bf..7500ca1 100755
--- a/src/source/extractor.rs
+++ b/src/source/extractor.rs
@@ -4,14 +4,37 @@ use crate::package::{PackageSpec, Source};
 use anyhow::{Context, Result, bail};
 use filetime::FileTime;
 use flate2::read::GzDecoder;
+use lz4_flex::frame::FrameDecoder as Lz4FrameDecoder;
+use lzma_rust2::{LzipReader, LzmaReader};
 use std::fs::{self, File};
 use std::io::{Cursor, Read, Write};
 use std::os::unix::fs as unix_fs;
 use std::path::{Path, PathBuf};
+use std::process::{Command, Stdio};
 use tempfile::{NamedTempFile, tempdir};
 use walkdir::WalkDir;
 use zstd::stream::read::Decoder as ZstdDecoder;
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+enum ArchiveFormat {
+    TarGz,
+    TarXz,
+    TarBz2,
+    TarZst,
+    TarLz4,
+    TarLzma,
+    TarLzip,
+    TarCompress,
+    Zip,
+    Tar,
+    Deb,
+    Rpm,
+    Cpio,
+    GzFile,
+    XzFile,
+    ZstFile,
+}
+
 /// Extract an archive source to the build directory.
 pub fn extract_archive(
     archive_path: &Path,
@@ -38,30 +61,24 @@ pub fn extract_archive(
 
     crate::log_info!("Extracting: {}", filename);
 
-    if filename.ends_with(".tar.gz") || filename.ends_with(".tgz") {
-        extract_tar_gz(archive_path, &extract_path)?;
-    } else if filename.ends_with(".tar.xz") || filename.ends_with(".txz") {
-        extract_tar_xz(archive_path, &extract_path)?;
-    } else if filename.ends_with(".tar.bz2") || filename.ends_with(".tbz2") {
-        extract_tar_bz2(archive_path, &extract_path)?;
-    } else if filename.ends_with(".tar.zst") || filename.ends_with(".tzst") {
-        extract_tar_zst(archive_path, &extract_path)?;
-    } else if filename.ends_with(".zip") {
-        extract_zip(archive_path, &extract_path)?;
-    } else if filename.ends_with(".tar") {
-        extract_tar(archive_path, &extract_path)?;
-    } else if filename.ends_with(".deb") {
-        extract_deb(archive_path, &extract_path)?;
-    } else if filename.ends_with(".rpm") {
-        extract_rpm(archive_path, &extract_path)?;
-    } else if filename.ends_with(".gz") {
-        extract_gz_file(archive_path, &extract_path)?;
-    } else if filename.ends_with(".xz") {
-        extract_xz_file(archive_path, &extract_path)?;
-    } else if filename.ends_with(".zst") {
-        extract_zst_file(archive_path, &extract_path)?;
-    } else {
-        bail!("Unsupported archive format: {}", filename);
+    match archive_format_for_filename(filename) {
+        Some(ArchiveFormat::TarGz) => extract_tar_gz(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarXz) => extract_tar_xz(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarBz2) => extract_tar_bz2(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarZst) => extract_tar_zst(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarLz4) => extract_tar_lz4(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarLzma) => extract_tar_lzma(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarLzip) => extract_tar_lzip(archive_path, &extract_path)?,
+        Some(ArchiveFormat::TarCompress) => extract_tar_compress(archive_path, &extract_path)?,
+        Some(ArchiveFormat::Zip) => extract_zip(archive_path, &extract_path)?,
+        Some(ArchiveFormat::Tar) => extract_tar(archive_path, &extract_path)?,
+        Some(ArchiveFormat::Deb) => extract_deb(archive_path, &extract_path)?,
+        Some(ArchiveFormat::Rpm) => extract_rpm(archive_path, &extract_path)?,
+        Some(ArchiveFormat::Cpio) => extract_cpio(archive_path, &extract_path)?,
+        Some(ArchiveFormat::GzFile) => extract_gz_file(archive_path, &extract_path)?,
+        Some(ArchiveFormat::XzFile) => extract_xz_file(archive_path, &extract_path)?,
+        Some(ArchiveFormat::ZstFile) => extract_zst_file(archive_path, &extract_path)?,
+        None => bail!("Unsupported archive format: {}", filename),
     }
 
     if !extract_path.exists() {
@@ -75,187 +92,65 @@ pub fn extract_archive(
     Ok(extract_path)
 }
 
+fn archive_format_for_filename(filename: &str) -> Option<ArchiveFormat> {
+    if filename.ends_with(".tar.gz") || filename.ends_with(".tgz") {
+        Some(ArchiveFormat::TarGz)
+    } else if filename.ends_with(".tar.xz") || filename.ends_with(".txz") {
+        Some(ArchiveFormat::TarXz)
+    } else if filename.ends_with(".tar.bz2") || filename.ends_with(".tbz2") {
+        Some(ArchiveFormat::TarBz2)
+    } else if filename.ends_with(".tar.zst") || filename.ends_with(".tzst") {
+        Some(ArchiveFormat::TarZst)
+    } else if filename.ends_with(".tar.lz4") {
+        Some(ArchiveFormat::TarLz4)
+    } else if filename.ends_with(".tar.lzma") {
+        Some(ArchiveFormat::TarLzma)
+    } else if filename.ends_with(".tar.lz") {
+        Some(ArchiveFormat::TarLzip)
+    } else if filename.ends_with(".tar.Z") {
+        Some(ArchiveFormat::TarCompress)
+    } else if filename.ends_with(".zip") {
+        Some(ArchiveFormat::Zip)
+    } else if filename.ends_with(".tar") {
+        Some(ArchiveFormat::Tar)
+    } else if filename.ends_with(".deb") {
+        Some(ArchiveFormat::Deb)
+    } else if filename.ends_with(".rpm") {
+        Some(ArchiveFormat::Rpm)
+    } else if filename.ends_with(".cpio") {
+        Some(ArchiveFormat::Cpio)
+    } else if filename.ends_with(".gz") {
+        Some(ArchiveFormat::GzFile)
+    } else if filename.ends_with(".xz") {
+        Some(ArchiveFormat::XzFile)
+    } else if filename.ends_with(".zst") {
+        Some(ArchiveFormat::ZstFile)
+    } else {
+        None
+    }
+}
+
 fn extract_tar_gz(path: &Path, dest: &Path) -> Result<()> {
-    let tmp = tempdir()?;
     let file = File::open(path)?;
     let decoder = GzDecoder::new(file);
-    let mut archive = tar::Archive::new(decoder);
-    archive.unpack(tmp.path())?;
-
-    // If the archive produced a single top-level directory, decide whether to
-    // strip that top directory (source tarballs like foo-1.2.3/) or preserve
-    // it (system-layout archives like usr/). Otherwise move all top-level
-    // entries into `dest` so `dest` always contains the source root.
-    let top = fs::read_dir(tmp.path())?
-        .filter_map(|r| r.ok())
-        .collect::<Vec<_>>();
-    if top.len() == 1 && top[0].path().is_dir() {
-        let top_name = top[0].file_name().to_string_lossy().to_string();
-        let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
-
-        // blacklist of system-layout directories we should NOT strip
-        let sys_blacklist = [
-            "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
-            "proc", "sys", "boot", "srv", "home",
-        ];
-
-        let looks_like_versioned =
-            |s: &str| s.contains('-') && s.chars().any(|c| c.is_ascii_digit());
-        let should_strip = (!sys_blacklist.contains(&top_name.as_str()))
-            && (top_name == expected_basename
-                || (!expected_basename.is_empty() && top_name.contains(expected_basename))
-                || looks_like_versioned(&top_name));
-
-        if should_strip {
-            // strip the single top-level folder (move its contents into dest)
-            move_dir_contents(&top[0].path(), dest)?;
-        } else {
-            // preserve the top-level folder (move the directory itself under dest)
-            fs::create_dir_all(dest)?;
-            let dest_top = dest.join(top_name);
-            if fs::rename(top[0].path(), &dest_top).is_err() {
-                copy_dir_recursive_local(&top[0].path(), &dest_top)?;
-                fs::remove_dir_all(top[0].path())?;
-            }
-        }
-    } else {
-        move_dir_contents(tmp.path(), dest)?;
-    }
-    Ok(())
+    extract_tar_reader(decoder, dest)
 }
 
 fn extract_tar_xz(path: &Path, dest: &Path) -> Result<()> {
-    let tmp = tempdir()?;
     let file = File::open(path)?;
     let decoder = xz2::read::XzDecoder::new(file);
-    let mut archive = tar::Archive::new(decoder);
-    archive.unpack(tmp.path())?;
-
-    let top = fs::read_dir(tmp.path())?
-        .filter_map(|r| r.ok())
-        .collect::<Vec<_>>();
-    if top.len() == 1 && top[0].path().is_dir() {
-        let top_name = top[0].file_name().to_string_lossy().to_string();
-        let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
-
-        // blacklist of system-layout directories we should NOT strip
-        let sys_blacklist = [
-            "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
-            "proc", "sys", "boot", "srv", "home",
-        ];
-
-        let looks_like_versioned =
-            |s: &str| s.contains('-') && s.chars().any(|c| c.is_ascii_digit());
-        let should_strip = (!sys_blacklist.contains(&top_name.as_str()))
-            && (top_name == expected_basename
-                || (!expected_basename.is_empty() && top_name.contains(expected_basename))
-                || looks_like_versioned(&top_name));
-
-        if should_strip {
-            // strip the single top-level folder (move its contents into dest)
-            move_dir_contents(&top[0].path(), dest)?;
-        } else {
-            // preserve the top-level folder (move the directory itself under dest)
-            fs::create_dir_all(dest)?;
-            let dest_top = dest.join(top_name);
-            if fs::rename(top[0].path(), &dest_top).is_err() {
-                copy_dir_recursive_local(&top[0].path(), &dest_top)?;
-                fs::remove_dir_all(top[0].path())?;
-            }
-        }
-    } else {
-        move_dir_contents(tmp.path(), dest)?;
-    }
-    Ok(())
+    extract_tar_reader(decoder, dest)
 }
 
 fn extract_tar_bz2(path: &Path, dest: &Path) -> Result<()> {
-    let tmp = tempdir()?;
     let file = File::open(path)?;
     let decoder = bzip2::read::BzDecoder::new(file);
-    let mut archive = tar::Archive::new(decoder);
-    archive.unpack(tmp.path())?;
-
-    let top = fs::read_dir(tmp.path())?
-        .filter_map(|r| r.ok())
-        .collect::<Vec<_>>();
-    if top.len() == 1 && top[0].path().is_dir() {
-        let top_name = top[0].file_name().to_string_lossy().to_string();
-        let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
-
-        // blacklist of system-layout directories we should NOT strip
-        let sys_blacklist = [
-            "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
-            "proc", "sys", "boot", "srv", "home",
-        ];
-
-        let looks_like_versioned =
-            |s: &str| s.contains('-') && s.chars().any(|c| c.is_ascii_digit());
-        let should_strip = (!sys_blacklist.contains(&top_name.as_str()))
-            && (top_name == expected_basename
-                || (!expected_basename.is_empty() && top_name.contains(expected_basename))
-                || looks_like_versioned(&top_name));
-
-        if should_strip {
-            // strip the single top-level folder (move its contents into dest)
-            move_dir_contents(&top[0].path(), dest)?;
-        } else {
-            // preserve the top-level folder (move the directory itself under dest)
-            fs::create_dir_all(dest)?;
-            let dest_top = dest.join(top_name);
-            if fs::rename(top[0].path(), &dest_top).is_err() {
-                copy_dir_recursive_local(&top[0].path(), &dest_top)?;
-                fs::remove_dir_all(top[0].path())?;
-            }
-        }
-    } else {
-        move_dir_contents(tmp.path(), dest)?;
-    }
-    Ok(())
+    extract_tar_reader(decoder, dest)
 }
 
 fn extract_tar(path: &Path, dest: &Path) -> Result<()> {
-    let tmp = tempdir()?;
     let file = File::open(path)?;
-    let mut archive = tar::Archive::new(file);
-    archive.unpack(tmp.path())?;
-
-    let top = fs::read_dir(tmp.path())?
-        .filter_map(|r| r.ok())
-        .collect::<Vec<_>>();
-    if top.len() == 1 && top[0].path().is_dir() {
-        let top_name = top[0].file_name().to_string_lossy().to_string();
-        let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
-
-        // blacklist of system-layout directories we should NOT strip
-        let sys_blacklist = [
-            "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
-            "proc", "sys", "boot", "srv", "home",
-        ];
-
-        let looks_like_versioned =
-            |s: &str| s.contains('-') && s.chars().any(|c| c.is_ascii_digit());
-        let should_strip = (!sys_blacklist.contains(&top_name.as_str()))
-            && (top_name == expected_basename
-                || (!expected_basename.is_empty() && top_name.contains(expected_basename))
-                || looks_like_versioned(&top_name));
-
-        if should_strip {
-            // strip the single top-level folder (move its contents into dest)
-            move_dir_contents(&top[0].path(), dest)?;
-        } else {
-            // preserve the top-level folder (move the directory itself under dest)
-            fs::create_dir_all(dest)?;
-            let dest_top = dest.join(top_name);
-            if fs::rename(top[0].path(), &dest_top).is_err() {
-                copy_dir_recursive_local(&top[0].path(), &dest_top)?;
-                fs::remove_dir_all(top[0].path())?;
-            }
-        }
-    } else {
-        move_dir_contents(tmp.path(), dest)?;
-    }
-    Ok(())
+    extract_tar_reader(file, dest)
 }
 
 fn extract_zip(path: &Path, dest: &Path) -> Result<()> {
@@ -263,60 +158,84 @@ fn extract_zip(path: &Path, dest: &Path) -> Result<()> {
     let file = File::open(path)?;
     let mut archive = zip::ZipArchive::new(file)?;
     archive.extract(tmp.path())?;
-
-    let top = fs::read_dir(tmp.path())?
-        .filter_map(|r| r.ok())
-        .collect::<Vec<_>>();
-    if top.len() == 1 && top[0].path().is_dir() {
-        let top_name = top[0].file_name().to_string_lossy().to_string();
-        let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
-
-        // blacklist of system-layout directories we should NOT strip
-        let sys_blacklist = [
-            "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
-            "proc", "sys", "boot", "srv", "home",
-        ];
-
-        let looks_like_versioned =
-            |s: &str| s.contains('-') && s.chars().any(|c| c.is_ascii_digit());
-        let should_strip = (!sys_blacklist.contains(&top_name.as_str()))
-            && (top_name == expected_basename
-                || (!expected_basename.is_empty() && top_name.contains(expected_basename))
-                || looks_like_versioned(&top_name));
-
-        if should_strip {
-            // strip the single top-level folder (move its contents into dest)
-            move_dir_contents(&top[0].path(), dest)?;
-        } else {
-            // preserve the top-level folder (move the directory itself under dest)
-            fs::create_dir_all(dest)?;
-            let dest_top = dest.join(top_name);
-            if fs::rename(top[0].path(), &dest_top).is_err() {
-                copy_dir_recursive_local(&top[0].path(), &dest_top)?;
-                fs::remove_dir_all(top[0].path())?;
-            }
-        }
-    } else {
-        move_dir_contents(tmp.path(), dest)?;
-    }
-    Ok(())
+    finalize_extracted_tree(tmp.path(), dest)
 }
 
 fn extract_tar_zst(path: &Path, dest: &Path) -> Result<()> {
-    let tmp = tempdir()?;
     let file = File::open(path)?;
     let decoder = ZstdDecoder::new(file)?;
-    let mut archive = tar::Archive::new(decoder);
-    archive.unpack(tmp.path())?;
+    extract_tar_reader(decoder, dest)
+}
 
-    let top = fs::read_dir(tmp.path())?
+fn extract_tar_lz4(path: &Path, dest: &Path) -> Result<()> {
+    let file = File::open(path)?;
+    let decoder = Lz4FrameDecoder::new(file);
+    extract_tar_reader(decoder, dest)
+}
+
+fn extract_tar_lzma(path: &Path, dest: &Path) -> Result<()> {
+    let file = File::open(path)?;
+    let decoder = LzmaReader::new_mem_limit(file, u32::MAX, None)?;
+    extract_tar_reader(decoder, dest)
+}
+
+fn extract_tar_lzip(path: &Path, dest: &Path) -> Result<()> {
+    let file = File::open(path)?;
+    let decoder = LzipReader::new(file);
+    extract_tar_reader(decoder, dest)
+}
+
+fn extract_tar_compress(path: &Path, dest: &Path) -> Result<()> {
+    let tmp = tempdir()?;
+    let mut child = Command::new("gzip");
+    child.arg("-cd").arg(path);
+    child.stdout(Stdio::piped());
+    let mut child = child.spawn().with_context(|| {
+        format!(
+            "Failed to spawn gzip for .Z decompression: {}",
+            path.display()
+        )
+    })?;
+    let stdout = child
+        .stdout
+        .take()
+        .context("Failed to capture gzip stdout")?;
+    let mut archive = tar::Archive::new(stdout);
+    archive
+        .unpack(tmp.path())
+        .with_context(|| format!("Failed to unpack .tar.Z archive {}", path.display()))?;
+    drop(archive);
+    let status = child
+        .wait()
+        .with_context(|| format!("Failed waiting for gzip on {}", path.display()))?;
+    if !status.success() {
+        bail!("gzip failed while decompressing {}", path.display());
+    }
+    finalize_extracted_tree(tmp.path(), dest)
+}
+
+fn extract_cpio(path: &Path, dest: &Path) -> Result<()> {
+    let tmp = tempdir()?;
+    let file = File::open(path)?;
+    extract_cpio_newc_from_reader(file, tmp.path())?;
+    finalize_extracted_tree(tmp.path(), dest)
+}
+
+fn extract_tar_reader<R: Read>(reader: R, dest: &Path) -> Result<()> {
+    let tmp = tempdir()?;
+    let mut archive = tar::Archive::new(reader);
+    archive.unpack(tmp.path())?;
+    finalize_extracted_tree(tmp.path(), dest)
+}
+
+fn finalize_extracted_tree(src_root: &Path, dest: &Path) -> Result<()> {
+    let top = fs::read_dir(src_root)?
         .filter_map(|r| r.ok())
         .collect::<Vec<_>>();
     if top.len() == 1 && top[0].path().is_dir() {
         let top_name = top[0].file_name().to_string_lossy().to_string();
         let expected_basename = dest.file_name().and_then(|n| n.to_str()).unwrap_or("");
 
-        // blacklist of system-layout directories we should NOT strip
         let sys_blacklist = [
             "usr", "bin", "sbin", "lib", "lib64", "etc", "share", "opt", "var", "run", "dev",
             "proc", "sys", "boot", "srv", "home",
@@ -330,10 +249,8 @@ fn extract_tar_zst(path: &Path, dest: &Path) -> Result<()> {
                 || looks_like_versioned(&top_name));
 
         if should_strip {
-            // strip the single top-level folder (move its contents into dest)
             move_dir_contents(&top[0].path(), dest)?;
         } else {
-            // preserve the top-level folder (move the directory itself under dest)
             fs::create_dir_all(dest)?;
             let dest_top = dest.join(top_name);
             if fs::rename(top[0].path(), &dest_top).is_err() {
@@ -342,7 +259,7 @@ fn extract_tar_zst(path: &Path, dest: &Path) -> Result<()> {
             }
         }
     } else {
-        move_dir_contents(tmp.path(), dest)?;
+        move_dir_contents(src_root, dest)?;
     }
     Ok(())
 }
@@ -684,10 +601,64 @@ fn copy_dir_recursive_local(src: &Path, dst: &Path) -> Result<()> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::package::{Build, BuildFlags, BuildType, Dependencies, PackageInfo};
+    use lz4_flex::frame::FrameEncoder as Lz4FrameEncoder;
+    use lzma_rust2::{LzipOptions, LzipWriter, LzmaOptions, LzmaWriter};
     use std::io::Write;
     use std::time::{Duration, SystemTime};
     use tempfile::tempdir;
 
+    fn test_spec() -> PackageSpec {
+        PackageSpec {
+            package: PackageInfo {
+                name: "pkg".into(),
+                version: "1.0".into(),
+                revision: 1,
+                description: "d".into(),
+                homepage: "h".into(),
+                license: vec!["MIT".into()],
+            },
+            packages: Vec::new(),
+            alternatives: Default::default(),
+            manual_sources: Vec::new(),
+            source: Vec::new(),
+            build: Build {
+                build_type: BuildType::Custom,
+                flags: BuildFlags::default(),
+            },
+            dependencies: Dependencies::default(),
+            package_alternatives: Default::default(),
+            package_dependencies: Default::default(),
+            spec_dir: PathBuf::from("."),
+        }
+    }
+
+    fn test_source(extract_dir: &str) -> Source {
+        Source {
+            url: "https://example.test/src.tar".into(),
+            sha256: "skip".into(),
+            extract_dir: extract_dir.into(),
+            patches: Vec::new(),
+            post_extract: Vec::new(),
+            cherry_pick: Vec::new(),
+        }
+    }
+
+    fn simple_tar_bytes(top_dir: &str, file_name: &str, contents: &[u8]) -> Vec<u8> {
+        let mut tar_buf = Vec::new();
+        {
+            let mut tar = tar::Builder::new(&mut tar_buf);
+            let mut header = tar::Header::new_gnu();
+            header.set_size(contents.len() as u64);
+            header.set_mode(0o644);
+            header.set_cksum();
+            tar.append_data(&mut header, format!("{top_dir}/{file_name}"), contents)
+                .unwrap();
+            tar.finish().unwrap();
+        }
+        tar_buf
+    }
+
     #[test]
     fn test_extract_deb_roundtrip() {
         let tmp = tempdir().unwrap();
@@ -733,6 +704,145 @@ mod tests {
         assert!(extract_dir.join("usr/bin/hello-deb").exists());
     }
 
+    #[test]
+    fn test_archive_format_for_new_extensions() {
+        assert_eq!(
+            archive_format_for_filename("pkg.tar.lz4"),
+            Some(ArchiveFormat::TarLz4)
+        );
+        assert_eq!(
+            archive_format_for_filename("pkg.tar.lzma"),
+            Some(ArchiveFormat::TarLzma)
+        );
+        assert_eq!(
+            archive_format_for_filename("pkg.tar.lz"),
+            Some(ArchiveFormat::TarLzip)
+        );
+        assert_eq!(
+            archive_format_for_filename("pkg.tar.Z"),
+            Some(ArchiveFormat::TarCompress)
+        );
+        assert_eq!(
+            archive_format_for_filename("pkg.cpio"),
+            Some(ArchiveFormat::Cpio)
+        );
+    }
+
+    #[test]
+    fn test_extract_archive_tar_lz4_roundtrip() {
+        let tmp = tempdir().unwrap();
+        let archive_path = tmp.path().join("pkg.tar.lz4");
+        let build_dir = tmp.path().join("build");
+        let tar_buf = simple_tar_bytes("pkg-1.0", "hello.txt", b"hello-lz4");
+
+        let mut compressed = Vec::new();
+        {
+            let mut encoder = Lz4FrameEncoder::new(&mut compressed);
+            encoder.write_all(&tar_buf).unwrap();
+            encoder.finish().unwrap();
+        }
+        fs::write(&archive_path, compressed).unwrap();
+
+        let extracted = extract_archive(
+            &archive_path,
+            &test_spec(),
+            &test_source("pkg-1.0"),
+            &build_dir,
+        )
+        .unwrap();
+
+        assert_eq!(
+            fs::read_to_string(extracted.join("hello.txt")).unwrap(),
+            "hello-lz4"
+        );
+    }
+
+    #[test]
+    fn test_extract_archive_tar_lzma_roundtrip() {
+        let tmp = tempdir().unwrap();
+        let archive_path = tmp.path().join("pkg.tar.lzma");
+        let build_dir = tmp.path().join("build");
+        let tar_buf = simple_tar_bytes("pkg-1.0", "hello.txt", b"hello-lzma");
+
+        let mut compressed = Vec::new();
+        {
+            let options = LzmaOptions::default();
+            let mut writer =
+                LzmaWriter::new_use_header(&mut compressed, &options, Some(tar_buf.len() as u64))
+                    .unwrap();
+            writer.write_all(&tar_buf).unwrap();
+            writer.finish().unwrap();
+        }
+        fs::write(&archive_path, compressed).unwrap();
+
+        let extracted = extract_archive(
+            &archive_path,
+            &test_spec(),
+            &test_source("pkg-1.0"),
+            &build_dir,
+        )
+        .unwrap();
+
+        assert_eq!(
+            fs::read_to_string(extracted.join("hello.txt")).unwrap(),
+            "hello-lzma"
+        );
+    }
+
+    #[test]
+    fn test_extract_archive_tar_lzip_roundtrip() {
+        let tmp = tempdir().unwrap();
+        let archive_path = tmp.path().join("pkg.tar.lz");
+        let build_dir = tmp.path().join("build");
+        let tar_buf = simple_tar_bytes("pkg-1.0", "hello.txt", b"hello-lzip");
+
+        let mut compressed = Vec::new();
+        {
+            let mut writer = LzipWriter::new(&mut compressed, LzipOptions::default());
+            writer.write_all(&tar_buf).unwrap();
+            writer.finish().unwrap();
+        }
+        fs::write(&archive_path, compressed).unwrap();
+
+        let extracted = extract_archive(
+            &archive_path,
+            &test_spec(),
+            &test_source("pkg-1.0"),
+            &build_dir,
+        )
+        .unwrap();
+
+        assert_eq!(
+            fs::read_to_string(extracted.join("hello.txt")).unwrap(),
+            "hello-lzip"
+        );
+    }
+
+    #[test]
+    fn test_extract_archive_cpio_roundtrip() {
+        let tmp = tempdir().unwrap();
+        let archive_path = tmp.path().join("pkg.cpio");
+        let build_dir = tmp.path().join("build");
+
+        let mut cpio = Vec::new();
+        write_cpio_newc_one_file(&mut cpio, "pkg-1.0/hello.txt", b"hello-cpio");
+        write_cpio_trailer(&mut cpio);
+        fs::write(&archive_path, cpio).unwrap();
+
+        let extracted = extract_archive(
+            &archive_path,
+            &test_spec(),
+            &test_source("pkg-1.0"),
+            &build_dir,
+        )
+        .unwrap();
+
+        assert_eq!(
+            fs::read_to_string(extracted.join("hello.txt")).unwrap(),
+            "hello-cpio"
+        );
+    }
+
     #[test]
     fn copy_file_preserve_metadata_keeps_mtime() {
         let tmp = tempdir().unwrap();