Merge #8427

8427: Move CI to rust-cache Action r=matklad a=Swatinem

This is humbling. I actually took inspiration from RAs pre-cache xtask when developing my action ;-)

Closes #7731

Co-authored-by: Arpad Borsos <[email protected]>

3 files changed, 0 insertions, 86 deletions

diff --git a/xtask/src/flags.rs b/xtask/src/flags.rs
index f80a5dd16..69b3cb9c1 100644
--- a/xtask/src/flags.rs
+++ b/xtask/src/flags.rs
@@ -28,7 +28,6 @@ xflags::xflags! {
         }
 
         cmd fuzz-tests {}
-        cmd pre-cache {}
 
         cmd release {
             optional --dry-run
@@ -62,7 +61,6 @@ pub enum XtaskCmd {
     Help(Help),
     Install(Install),
     FuzzTests(FuzzTests),
-    PreCache(PreCache),
     Release(Release),
     Promote(Promote),
     Dist(Dist),
@@ -88,9 +86,6 @@ pub struct Install {
 pub struct FuzzTests;
 
 #[derive(Debug)]
-pub struct PreCache;
-
-#[derive(Debug)]
 pub struct Release {
     pub dry_run: bool,
 }
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index ce3353410..d0bef7b7a 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -18,7 +18,6 @@ mod install;
 mod release;
 mod dist;
 mod metrics;
-mod pre_cache;
 
 use anyhow::{bail, Result};
 use std::{
@@ -39,7 +38,6 @@ fn main() -> Result<()> {
         }
         flags::XtaskCmd::Install(cmd) => cmd.run(),
         flags::XtaskCmd::FuzzTests(_) => run_fuzzer(),
-        flags::XtaskCmd::PreCache(cmd) => cmd.run(),
         flags::XtaskCmd::Release(cmd) => cmd.run(),
         flags::XtaskCmd::Promote(cmd) => cmd.run(),
         flags::XtaskCmd::Dist(cmd) => cmd.run(),
diff --git a/xtask/src/pre_cache.rs b/xtask/src/pre_cache.rs
deleted file mode 100644
index b456224fd..000000000
--- a/xtask/src/pre_cache.rs
+++ /dev/null
@@ -1,79 +0,0 @@
-use std::{
-    fs::FileType,
-    path::{Path, PathBuf},
-};
-
-use anyhow::Result;
-use xshell::rm_rf;
-
-use crate::flags;
-
-impl flags::PreCache {
-    /// Cleans the `./target` dir after the build such that only
-    /// dependencies are cached on CI.
-    pub(crate) fn run(self) -> Result<()> {
-        let slow_tests_cookie = Path::new("./target/.slow_tests_cookie");
-        if !slow_tests_cookie.exists() {
-            panic!("slow tests were skipped on CI!")
-        }
-        rm_rf(slow_tests_cookie)?;
-
-        for path in read_dir("./target/debug", FileType::is_file)? {
-            // Can't delete yourself on windows :-(
-            if !path.ends_with("xtask.exe") {
-                rm_rf(&path)?
-            }
-        }
-
-        rm_rf("./target/.rustc_info.json")?;
-
-        let to_delete = read_dir("./crates", FileType::is_dir)?
-            .into_iter()
-            .map(|path| path.file_name().unwrap().to_string_lossy().replace('-', "_"))
-            .collect::<Vec<_>>();
-
-        for &dir in ["./target/debug/deps", "target/debug/.fingerprint"].iter() {
-            for path in read_dir(dir, |_file_type| true)? {
-                if path.ends_with("xtask.exe") {
-                    continue;
-                }
-                let file_name = path.file_name().unwrap().to_string_lossy();
-                let (stem, _) = match rsplit_once(&file_name, '-') {
-                    Some(it) => it,
-                    None => {
-                        rm_rf(path)?;
-                        continue;
-                    }
-                };
-                let stem = stem.replace('-', "_");
-                if to_delete.contains(&stem) {
-                    rm_rf(path)?;
-                }
-            }
-        }
-
-        Ok(())
-    }
-}
-fn read_dir(path: impl AsRef<Path>, cond: impl Fn(&FileType) -> bool) -> Result<Vec<PathBuf>> {
-    read_dir_impl(path.as_ref(), &cond)
-}
-
-fn read_dir_impl(path: &Path, cond: &dyn Fn(&FileType) -> bool) -> Result<Vec<PathBuf>> {
-    let mut res = Vec::new();
-    for entry in path.read_dir()? {
-        let entry = entry?;
-        let file_type = entry.file_type()?;
-        if cond(&file_type) {
-            res.push(entry.path())
-        }
-    }
-    Ok(res)
-}
-
-fn rsplit_once(haystack: &str, delim: char) -> Option<(&str, &str)> {
-    let mut split = haystack.rsplitn(2, delim);
-    let suffix = split.next()?;
-    let prefix = split.next()?;
-    Some((prefix, suffix))
-}