diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 726a334d..30be32f1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -92,22 +92,23 @@ jobs:
           RUSTFLAGS="-C instrument-coverage" cargo build
           echo "$PWD/target/debug" >> $GITHUB_PATH
 
-      - name: run integrations
-        run: |
-          pkgx --help
-          pkgx --version
-          pkgx +git
-          pkgx +git --json
-          pkgx +git --json=v1
-          pkgx git --version
-          pkgx --silent +git
-          pkgx --quiet +git
-          pkgx +git -- git --version   # lib/utils.rs:find_program
-          pkgx --shellcode || true
-          pkgx -qq git --version
-          pkgx -s git --version
-          pkgx -j +git
-          pkgx /usr/bin/awk --version
+      - run: pkgx --help
+      - run: pkgx --version
+      - run: pkgx +git
+      - run: pkgx +git --json
+      - run: pkgx +git --json=v1
+      - run: pkgx git --version
+      - run: pkgx --silent +git
+      - run: pkgx --quiet +git
+      - run: pkgx +git -- git --version   # lib/utils.rs:find_program
+      - run: pkgx --shellcode || true
+      - run: pkgx -qq git --version
+      - run: pkgx -s git --version
+      - run: pkgx -j +git
+      - run: pkgx /usr/bin/awk --version
+      - run: pkgx +yarnpkg.com yarn --version
+      - run: pkgx +yarnpkg.com -- yarn --version
+      - run: '! pkgx yarn --version'
 
       - name: generate coverage
         run: |
diff --git a/crates/cli/src/main.rs b/crates/cli/src/main.rs
index 836fa09f..2b4f2b2a 100644
--- a/crates/cli/src/main.rs
+++ b/crates/cli/src/main.rs
@@ -67,6 +67,30 @@ async fn main() -> Result<(), Box<dyn Error>> {
 
     let mut pkgs = vec![];
 
+    for pkgspec in plus {
+        let PackageReq {
+            project: project_or_cmd,
+            constraint,
+        } = PackageReq::parse(&pkgspec)?;
+        if config
+            .pantry_dir
+            .join("projects")
+            .join(project_or_cmd.clone())
+            .is_dir()
+        {
+            pkgs.push(PackageReq {
+                project: project_or_cmd,
+                constraint,
+            });
+        } else {
+            let project = which(&project_or_cmd, &conn, &pkgs).await?;
+            pkgs.push(PackageReq {
+                project,
+                constraint,
+            });
+        }
+    }
+
     if find_program {
         let PackageReq {
             constraint,
@@ -75,7 +99,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
 
         args[0] = cmd.clone(); // invoke eg. `node` rather than eg. `node@20`
 
-        let project = match which(&cmd, &conn).await {
+        let project = match which(&cmd, &conn, &pkgs).await {
             Err(WhichError::CmdNotFound(cmd)) => {
                 if !did_sync {
                     if let Some(spinner) = &spinner {
@@ -87,7 +111,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                     if let Some(spinner) = &spinner {
                         spinner.set_message("resolving pkg graph…");
                     }
-                    which(&cmd, &conn).await
+                    which(&cmd, &conn, &pkgs).await
                 } else {
                     Err(WhichError::CmdNotFound(cmd))
                 }
@@ -102,30 +126,6 @@ async fn main() -> Result<(), Box<dyn Error>> {
         });
     }
 
-    for pkgspec in plus {
-        let PackageReq {
-            project: project_or_cmd,
-            constraint,
-        } = PackageReq::parse(&pkgspec)?;
-        if config
-            .pantry_dir
-            .join("projects")
-            .join(project_or_cmd.clone())
-            .is_dir()
-        {
-            pkgs.push(PackageReq {
-                project: project_or_cmd,
-                constraint,
-            });
-        } else {
-            let project = which(&project_or_cmd, &conn).await?;
-            pkgs.push(PackageReq {
-                project,
-                constraint,
-            });
-        }
-    }
-
     let companions = pantry_db::companions_for_projects(
         &pkgs
             .iter()
@@ -262,14 +262,28 @@ impl std::fmt::Display for WhichError {
 
 impl std::error::Error for WhichError {}
 
-async fn which(cmd: &String, conn: &Connection) -> Result<String, WhichError> {
+async fn which(cmd: &String, conn: &Connection, pkgs: &[PackageReq]) -> Result<String, WhichError> {
     let candidates = pantry_db::which(cmd, conn).map_err(WhichError::DbError)?;
     if candidates.len() == 1 {
         Ok(candidates[0].clone())
     } else if candidates.is_empty() {
-        return Err(WhichError::CmdNotFound(cmd.clone()));
+        Err(WhichError::CmdNotFound(cmd.clone()))
     } else {
-        return Err(WhichError::MultipleProjects(cmd.clone(), candidates));
+        let selected_pkgs = candidates
+            .clone()
+            .into_iter()
+            .filter(|candidate| {
+                pkgs.iter().any(|pkg| {
+                    let PackageReq { project, .. } = pkg;
+                    project == candidate
+                })
+            })
+            .collect::<Vec<String>>();
+        if selected_pkgs.len() == 1 {
+            Ok(selected_pkgs[0].clone())
+        } else {
+            Err(WhichError::MultipleProjects(cmd.clone(), candidates))
+        }
     }
 }