README.md — sigil-r7rs

1# sigil-r7rs

3R7RS-small compatibility library for [Sigil](https://codeberg.org/sigil/sigil).

This package provides the standard `(scheme *)` module paths defined by [R7RS-small](https://small.r7rs.org/), allowing programs written against the R7RS standard library to run on Sigil without modification.

7## Modules

9| Module | R7RS Section |

10|--------|-------------|

11| `(scheme base)` | Core library: arithmetic, lists, strings, I/O, control flow |

12| `(scheme case-lambda)` | Case-lambda dispatch |

13| `(scheme char)` | Character predicates and case conversion |

14| `(scheme cxr)` | Compositions of `car` and `cdr` |

15| `(scheme eval)` | `eval` and `environment` |

16| `(scheme file)` | File I/O |

17| `(scheme inexact)` | Inexact arithmetic (`sin`, `cos`, `sqrt`, etc.) |

18| `(scheme lazy)` | `delay`, `force`, `make-promise` |

19| `(scheme load)` | `load` |

20| `(scheme process-context)` | `command-line`, `exit`, environment variables |

21| `(scheme read)` | `read` |

22| `(scheme repl)` | `interaction-environment` |

23| `(scheme time)` | `current-second`, `current-jiffy` |

24| `(scheme write)` | `display`, `write`, `write-shared` |

26## Usage

28Add as a dependency in your `package.sgl`:

30```scheme

31(define sigil-repo "codeberg:sigil/sigil")

33(package

34 ...

35 dependencies: (list

36 (from-git url: "codeberg:sigil/sigil-r7rs")))

37```

39Then import standard Scheme modules:

41```scheme

42(import (scheme base)

43 (scheme write))

45(display "Hello from R7RS!")

46(newline)

47```

49## Building

51```

52sigil deps install

53sigil build

54sigil test

55```

57## License

59BSD-3-Clause