add PKGX_NO_INSTALL

.github/workflows/ci.yml

@@ -179,6 +179,13 @@ jobs:
           pkgx -Q node git | grep -q nodejs.org
           ! pkgx -Q git-scm.org@99999
 
+      - name: test PKGX_NO_INSTALL
+        run: |
+          rm -r ~/.pkgx/stedolan.github.io/jq || true
+          ! PKGX_NO_INSTALL=1 pkgx jq --version
+          pkgx jq --version
+          PKGX_NO_INSTALL=1 pkgx jq --version
+
       - run: if [ $(find ~/.pkgx -name .tmp\* -type d | wc -l) -gt 0 ]; then
           exit 1;
           fi

crates/cli/Cargo.toml

@@ -3,7 +3,7 @@ name = "pkgx"
 description = "Run anything"
 authors = ["Max Howell <mxcl@me.com>", "Jacob Heider <jacob@pkgx.dev>"]
 license = "Apache-2.0"
-version = "2.8.0"
+version = "2.9.0"
 edition = "2021"
 repository = "https://github.com/pkgxdev/pkgx"
 

crates/cli/src/resolve.rs

@@ -1,3 +1,5 @@
+use std::env;
+
 use libpkgx::{
     config::Config,
     hydrate::hydrate,
@@ -84,6 +86,9 @@ pub async fn resolve(
 
     let mut installations = resolution.installed;
     if !resolution.pending.is_empty() {
+        if env::var("PKGX_NO_INSTALL").is_ok() {
+            return Err("PKGX_NO_INSTALL is set, refusing to install pending packages")?;
+        }
         let installed = install_multi(&resolution.pending, config, spinner.arc()).await?;
         installations.extend(installed);
     }