Do not fail on cfg(weird) dependencies

nagisa · kolloch · commit bef10afb88fc · 2021-01-07T21:03:36.000+01:00
diff --git a/crate2nix/src/render.rs b/crate2nix/src/render.rs
@@ -204,7 +204,7 @@ fn cfg_to_nix_expr(cfg: &CfgExpr) -> String {
     fn render(result: &mut String, cfg: &CfgExpr) {
         match cfg {
             CfgExpr::Value(Cfg::Name(name)) => {
-                result.push_str(&format!("target.{}", target(name)));
+                result.push_str(&format!("(target.{} or false)", target(name)));
             }
             CfgExpr::Value(Cfg::KeyPair(key, value)) => {
                 let escaped_value = escape_nix_string(value);
diff --git a/sample_projects/bin/Cargo.lock b/sample_projects/bin/Cargo.lock
diff --git a/sample_projects/bin/Cargo.toml b/sample_projects/bin/Cargo.toml
@@ -5,3 +5,6 @@ authors = ["Peter Kolloch <info@eigenvalue.net>"]
 edition = "2018"
 
 [dependencies]
+
+[target.'cfg(never_happens)'.dependencies]
+cfg-if = "1"

Original file line number	Diff line number	Diff line change
`@@ -204,7 +204,7 @@ fn cfg_to_nix_expr(cfg: &CfgExpr) -> String {`
`204`	`204`	`fn render(result: &mut String, cfg: &CfgExpr) {`
`205`	`205`	`match cfg {`
`206`	`206`	`CfgExpr::Value(Cfg::Name(name)) => {`
`207`		`- result.push_str(&format!("target.{}", target(name)));`
	`207`	`+ result.push_str(&format!("(target.{} or false)", target(name)));`
`208`	`208`	`}`
`209`	`209`	`CfgExpr::Value(Cfg::KeyPair(key, value)) => {`
`210`	`210`	`let escaped_value = escape_nix_string(value);`