read only these --print-deps dependencies that are necessary

Author: vporton

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 ### feat: rebuild only necessary canisters
 
+Read only those `--print-deps` dependencies that are necessary to read.
+
 Don't compile canisters for which all dependencies are elder than the `.wasm` file.
 This results in big compilation speedups.
 

src/dfx/src/commands/deps/pull.rs

@@ -82,7 +82,6 @@ async fn resolve_all_dependencies(
 ) -> DfxResult<Vec<Principal>> {
     let mut canisters_to_resolve: VecDeque<Principal> =
         pull_canisters_in_config.values().cloned().collect();
-    println!("canisters_to_resolve: {:?}", canisters_to_resolve); // FIXME: Remove.
     let mut checked = BTreeSet::new();
     while let Some(canister_id) = canisters_to_resolve.pop_front() {
         if !checked.contains(&canister_id) {

src/dfx/src/lib/builders/motoko.rs

@@ -79,10 +79,6 @@ fn get_imports(cache: &dyn Cache, info: &MotokoCanisterInfo) -> DfxResult<BTreeS
         Ok(())
     }
 
-    // FIXME: Remove.
-    println!("Getting imports for canister {}.", info.get_main_path().display());
-    // println!("Custom backtrace: {}", std::backtrace::Backtrace::force_capture());
-
     let mut result = BTreeSet::new();
     get_imports_recursive(cache, info.get_main_path(), &mut result)?;
 
@@ -97,7 +93,6 @@ impl CanisterBuilder for MotokoBuilder {
         info: &CanisterInfo,
     ) -> DfxResult<Vec<CanisterId>> {
         let motoko_info = info.as_info::<MotokoCanisterInfo>()?;
-        println!("get_dependencies: {}", info.get_name()); // FIXME: Remove.
         let imports = get_imports(self.cache.as_ref(), &motoko_info)?; // TODO: slow operation
 
         Ok(imports

src/dfx/src/lib/models/canister.rs

@@ -21,7 +21,6 @@ use ic_wasm::metadata::{add_metadata, remove_metadata, Kind};
 use ic_wasm::optimize::OptLevel;
 use itertools::Itertools;
 use petgraph::graph::{DiGraph, NodeIndex};
-use petgraph::visit::Bfs;
 use rand::{thread_rng, RngCore};
 use slog::{error, info, trace, warn, Logger};
 use std::cell::RefCell;
@@ -531,7 +530,6 @@ impl CanisterPool {
     /// Build only dependencies relevant for `canisters_to_build`.
     #[context("Failed to build dependencies graph for canister pool.")]
     fn build_dependencies_graph(&self, canisters_to_build: Option<Vec<String>>) -> DfxResult<DiGraph<CanisterId, ()>> {
-        println!("build_dependencies_graph"); // FIXME: Remove.
         let mut graph: DiGraph<CanisterId, ()> = DiGraph::new();
         let mut id_set: BTreeMap<CanisterId, NodeIndex<u32>> = BTreeMap::new();