Install latest if no binaries are found

README.md

@@ -24,7 +24,13 @@ To automatically install and use a version, run `solc-select use <version> --alw
 
 ## Usage
 
-The global version of `solc` can be set with the `solc-select use <version>` command:
+By default, `solc-select` will install the most recent available Solidity file for your version. This will automatically be done when you run `solc` for the first time. 
+
+```bash 
+solc 
+```
+
+The global version of `solc` will automatically be set to to the latest version. You can reset this with the `solc-select use <version>` command:
 ```
 $ solc --version
 solc, the solidity compiler commandline interface
@@ -35,7 +41,6 @@ $ solc --version
 solc, the solidity compiler commandline interface
 Version: 0.4.24+commit.e67f0147.Linux.g++
 ```
-
 Use `SOLC_VERSION` environment variable to override the global version:
 ```
 $ solc --version
@@ -46,6 +51,14 @@ solc, the solidity compiler commandline interface
 Version: 0.5.2+commit.1df8f40c.Linux.g++
 ```
 
+By default, solc-select will halt if you try to use a version that you do not have installed already. Use the `--always-install` flags to bypass this. 
+
+```bash 
+solc-select use 0.8.1 --always-install
+Installing '0.8.1'...
+Version '0.8.1' installed.
+```
+
 You can list all available versions with `solc-select install`:
 ```
 $ solc-select install
@@ -57,23 +70,6 @@ Available versions to install:
 0.8.1
 ```
 
-And install the one you need with `solc-select install <version>`:
-```
-$ solc-select install 0.8.1
-Installing '0.8.1'...
-Version '0.8.1' installed.
-```
-
-You can also install the latest version with `solc-select install latest`
-and use the latest version with `solc-select use latest`
-
-Display the currently installed versions:
-```
-$ solc-select versions
-0.8.0
-0.4.2 (current, set by /Users/artur/.solc-select/global-version)
-```
-
 ## Getting Help
 
 Feel free to stop by our [Slack channel](https://empirehacking.slack.com/) for help on using or extending `solc-select`.

solc_select/__main__.py

@@ -21,6 +21,7 @@
     upgrade_architecture,
 )
 
+
 # pylint: disable=too-many-branches
 def solc_select() -> None:
     parser = argparse.ArgumentParser()
@@ -84,6 +85,8 @@ def solc_select() -> None:
 
 
 def solc() -> None:
+    if not installed_versions():
+        switch_global_version(version="latest", always_install=True)
     res = current_version()
     if res:
         (version, _) = res

solc_select/solc_select.py

@@ -192,6 +192,8 @@ def get_url(version: str = "", artifact: str = "") -> (str, str):
 
 
 def switch_global_version(version: str, always_install: bool) -> None:
+    if version == "latest":
+        version = get_latest_release()
     if version in installed_versions():
         with open(f"{SOLC_SELECT_DIR}/global-version", "w", encoding="utf-8") as f:
             f.write(version)