add no-link, out-link option

README.md

@@ -128,10 +128,10 @@ $ nix run github:Mic92/nix-fast-build -- --skip-cached --no-nom --flake ".#check
 ## Reference
 
 ```console
-usage: nix-fast-build [-h] [-f FLAKE] [-j MAX_JOBS] [--option name value] [--no-nom] [--systems SYSTEMS]
-                    [--retries RETRIES] [--remote REMOTE] [--always-upload-source] [--no-download]
-                    [--skip-cached] [--copy-to COPY_TO] [--verbose]
-                    [--eval-max-memory-size EVAL_MAX_MEMORY_SIZE] [--eval-workers EVAL_WORKERS]
+usage: nix-fast-build [-h] [-f FLAKE] [-j MAX_JOBS] [--option name value] [--remote-ssh-option name value] [--no-nom]
+                      [--systems SYSTEMS] [--retries RETRIES] [--no-link] [--out-link OUT_LINK] [--remote REMOTE]
+                      [--always-upload-source] [--no-download] [--skip-cached] [--copy-to COPY_TO] [--debug]
+                      [--eval-max-memory-size EVAL_MAX_MEMORY_SIZE] [--eval-workers EVAL_WORKERS]
 
 options:
   -h, --help            show this help message and exit
@@ -140,21 +140,23 @@ options:
   -j MAX_JOBS, --max-jobs MAX_JOBS
                         Maximum number of build jobs to run in parallel (0 for unlimited)
   --option name value   Nix option to set
+  --remote-ssh-option name value
+                        ssh option when accessing remote
   --no-nom              Don't use nix-output-monitor to print build output (default: false)
-  --systems SYSTEMS     Comma-separated list of systems to build for (default: current system)
+  --systems SYSTEMS     Space-separated list of systems to build for (default: current system)
   --retries RETRIES     Number of times to retry failed builds
+  --no-link             Do not create an out-link for builds (default: false)
+  --out-link OUT_LINK   Name of the out-link for builds (default: result)
   --remote REMOTE       Remote machine to build on
   --always-upload-source
-                        Always upload sources to remote machine. This is needed if the remote machine cannot
-                        access all sources (default: false)
+                        Always upload sources to remote machine. This is needed if the remote machine cannot access all sources
+                        (default: false)
   --no-download         Do not download build results from remote machine
   --skip-cached         Skip builds that are already present in the binary cache (default: false)
-  --copy-to COPY_TO     Copy build results to the given path (passed to nix copy, i.e.
-                        file:///tmp/cache?compression=none)
-  --verbose             Print verbose output
+  --copy-to COPY_TO     Copy build results to the given path (passed to nix copy, i.e. file:///tmp/cache?compression=none)
+  --debug               debug logging output
   --eval-max-memory-size EVAL_MAX_MEMORY_SIZE
-                        Maximum memory size for nix-eval-jobs (in MiB) per worker. After the limit is
-                        reached, the worker is restarted.
+                        Maximum memory size for nix-eval-jobs (in MiB) per worker. After the limit is reached, the worker is restarted.
   --eval-workers EVAL_WORKERS
                         Number of evaluation threads spawned
 ```

nix_fast_build/__init__.py

@@ -62,6 +62,8 @@ class Options:
     copy_to: str | None = None
     nom: bool = True
     download: bool = True
+    no_link: bool = False
+    out_link: str = "result"
 
     @property
     def remote_url(self) -> None | str:
@@ -158,6 +160,17 @@ async def parse_args(args: list[str]) -> Options:
         default=0,
         help="Number of times to retry failed builds",
     )
+    parser.add_argument(
+        "--no-link",
+        help="Do not create an out-link for builds (default: false)",
+        action="store_true",
+        default=False,
+    )
+    parser.add_argument(
+        "--out-link",
+        help="Name of the out-link for builds (default: result)",
+        default="result",
+    )
     parser.add_argument(
         "--remote",
         type=str,
@@ -252,6 +265,8 @@ async def parse_args(args: list[str]) -> Options:
         eval_max_memory_size=a.eval_max_memory_size,
         eval_workers=a.eval_workers,
         copy_to=a.copy_to,
+        no_link=a.no_link,
+        out_link=a.out_link,
     )
 
 
@@ -464,7 +479,7 @@ async def build(
         self, stack: AsyncExitStack, build_output: IO[str], opts: Options
     ) -> int:
         proc = await stack.enter_async_context(
-            nix_build(self.drv_path, build_output, opts)
+            nix_build(self.attr, self.drv_path, build_output, opts)
         )
         rc = 0
         for _ in range(opts.retries + 1):
@@ -562,13 +577,21 @@ async def get_context(self) -> AsyncIterator[T]:
 
 @asynccontextmanager
 async def nix_build(
-    installable: str, stderr: IO[Any] | None, opts: Options
+    attr: str, installable: str, stderr: IO[Any] | None, opts: Options
 ) -> AsyncIterator[Process]:
     args = [
         "nix-build",
         installable,
         "--keep-going",
     ] + opts.options
+    if opts.no_link:
+        args += ["--no-link"]
+    else:
+        args += [
+            "--out-link",
+            opts.out_link + "-" + attr,
+        ]
+
     args = maybe_remote(args, opts)
     logger.debug("run %s", shlex.join(args))
     proc = await asyncio.create_subprocess_exec(*args, stderr=stderr)