From ba61dfd69504ec6263a9dee9931d93adeb6f3142 Mon Sep 17 00:00:00 2001 From: Rutger Broekhoff Date: Mon, 7 Jul 2025 21:52:08 +0200 Subject: Initialize repository --- COPYING | 564 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 564 insertions(+) create mode 100644 COPYING (limited to 'COPYING') diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..412a78c --- /dev/null +++ b/COPYING @@ -0,0 +1,564 @@ +License information for this artifact +===================================== + +This artifact consists of a few parts. We choose to license most of +our code under the 3-clause BSD license (SPDX: BSD-3-Clause), with an +exception of the Nix test suite that we have adopted, which remains +licensed under LGPL 2.1 (SPDX: LGPL-2.1-or-later). + +Specifically: +- The following files in lib/nix/ are derived from nixformat [1] by + Denis Korzunov: + lexer.ml, nix.ml, parser.mly, printer.ml and types.ml + nixformat is licensed under ISC (SPDX: ISC). For consistency, we + choose to relicense these files under the 3-clause BSD license (as + it subsumes the ISC license). We also include a copy of the ISC + license as required. +- The files in test/testdata/ come from Nix [2] and remain licensed + under version 2.1 of the LGPL license. We also include a copy of + this license below. The only exception here is the file + test/testdata/importdef.sexp + which was created by us (and is therefore licensed under the 3-clause BSD + license). +- Any files not described by the preceding items is licensed under the + 3-clause BSD license. + +[1]: https://github.com/d2km/nixformat +[2]: https://github.com/NixOs/nix + + +The 3-clause BSD license (BSD-3-Clause) +--------------------------------------- + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following + disclaimer in the documentation and/or other materials provided + with the distribution. + 3. Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +The ISC license (ISC) +--------------------- + +Permission to use, copy, modify, and /or distribute this software for +any purpose with or without fee is hereby granted, provided that the +above copyright notice and this permission notice appear in all +copies. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL +WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE +AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL +DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR +PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER +TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. + + +Version 2.1 of the LGPL license (LGPL-2.1-or-later) +--------------------------------------------------- + +Copyright (C) 1991, 1999 Free Software Foundation, Inc. +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +Everyone is permitted to copy and distribute verbatim copies of this +license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts +as the successor of the GNU Library Public License, version 2, hence +the version number 2.1.] + +Preamble + +The licenses for most software are designed to take away your freedom +to share and change it. By contrast, the GNU General Public Licenses +are intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. + +This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations +below. + +When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + +To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + +For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + +We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + +To protect each distributor, we want to make it very clear that there +is no warranty for the free library. Also, if the library is modified +by someone else and passed on, the recipients should know that what +they have is not the original version, so that the original author's +reputation will not be affected by problems that might be introduced +by others. + +Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + +Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + +When a program is linked with a library, whether statically or using a +shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + +We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + +For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it +becomes a de-facto standard. To achieve this, non-free programs must +be allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + +In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + +Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + +The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + +GNU LESSER GENERAL PUBLIC LICENSE + +TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or + other program which contains a notice placed by the copyright + holder or other authorized party saying it may be distributed + under the terms of this Lesser General Public License (also + called "this License"). Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or + data prepared so as to be conveniently linked with application + programs (which use some of those functions and data) to form + executables. + + The "Library", below, refers to any such software library or + work which has been distributed under these terms. A "work + based on the Library" means either the Library or any + derivative work under copyright law: that is to say, a work + containing the Library or a portion of it, either verbatim or + with modifications and/or translated straightforwardly into + another language. (Hereinafter, translation is included + without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work + for making modifications to it. For a library, complete source + code means all the source code for all modules it contains, + plus any associated interface definition files, plus the + scripts used to control compilation and installation of the + library. + + Activities other than copying, distribution and modification + are not covered by this License; they are outside its scope. + The act of running a program using the Library is not + restricted, and output from such a program is covered only if + its contents constitute a work based on the Library + (independent of the use of the Library in a tool for writing + it). Whether that is true depends on what the Library does and + what the program that uses the Library does. 1. You may copy + and distribute verbatim copies of the Library's complete + source code as you receive it, in any medium, provided that + you conspicuously and appropriately publish on each copy an + appropriate copyright notice and disclaimer of warranty; keep + intact all the notices that refer to this License and to the + absence of any warranty; and distribute a copy of this License + along with the Library. + + You may charge a fee for the physical act of transferring a + copy, and you may at your option offer warranty protection in + exchange for a fee. + + 2. You may modify your copy or copies of the Library or any + portion of it, thus forming a work based on the Library, and + copy and distribute such modifications or work under the terms + of Section 1 above, provided that you also meet all of these + conditions: + + a) The modified work must itself be a software library. + b) You must cause the files modified to carry prominent + notices stating that you changed the files and the date of + any change. + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this + License. + d) If a facility in the modified Library refers to a function + or a table of data to be supplied by an application + program that uses the facility, other than as an argument + passed when the facility is invoked, then you must make a + good faith effort to ensure that, in the event an + application does not supply such function or table, the + facility still operates, and performs whatever part of its + purpose remains meaningful. + + (For example, a function in a library to compute square roots + has a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function + must be optional: if the application does not supply it, the + square root function must still compute square roots.) + + These requirements apply to the modified work as a whole. If + identifiable sections of that work are not derived from the + Library, and can be reasonably considered independent and + separate works in themselves, then this License, and its + terms, do not apply to those sections when you distribute them + as separate works. But when you distribute the same sections + as part of a whole which is a work based on the Library, the + distribution of the whole must be on the terms of this + License, whose permissions for other licensees extend to the + entire whole, and thus to each and every part regardless of + who wrote it. + + Thus, it is not the intent of this section to claim rights or + contest your rights to work written entirely by you; rather, + the intent is to exercise the right to control the + distribution of derivative or collective works based on the + Library. + + In addition, mere aggregation of another work not based on the + Library with the Library (or with a work based on the Library) + on a volume of a storage or distribution medium does not bring + the other work under the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General + Public License instead of this License to a given copy of the + Library. To do this, you must alter all the notices that refer + to this License, so that they refer to the ordinary GNU + General Public License, version 2, instead of to this License. + (If a newer version than version 2 of the ordinary GNU General + Public License has appeared, then you can specify that version + instead if you wish.) Do not make any other change in these + notices. + + Once this change is made in a given copy, it is irreversible + for that copy, so the ordinary GNU General Public License + applies to all subsequent copies and derivative works made + from that copy. + + This option is useful when you wish to copy part of the code + of the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or + derivative of it, under Section 2) in object code or + executable form under the terms of Sections 1 and 2 above + provided that you accompany it with the complete corresponding + machine-readable source code, which must be distributed under + the terms of Sections 1 and 2 above on a medium customarily + used for software interchange. + + If distribution of object code is made by offering access to + copy from a designated place, then offering equivalent access + to copy the source code from the same place satisfies the + requirement to distribute the source code, even though third + parties are not compelled to copy the source along with the + object code. + + 5. A program that contains no derivative of any portion of the + Library, but is designed to work with the Library by being + compiled or linked with it, is called a "work that uses the + Library". Such a work, in isolation, is not a derivative work + of the Library, and therefore falls outside the scope of this + License. + + However, linking a "work that uses the Library" with the + Library creates an executable that is a derivative of the + Library (because it contains portions of the Library), rather + than a "work that uses the library". The executable is + therefore covered by this License. Section 6 states terms for + distribution of such executables. + + When a "work that uses the Library" uses material from a + header file that is part of the Library, the object code for + the work may be a derivative work of the Library even though + the source code is not. Whether this is true is especially + significant if the work can be linked without the Library, or + if the work is itself a library. The threshold for this to be + true is not precisely defined by law. + + If such an object file uses only numerical parameters, data + structure layouts and accessors, and small macros and small + inline functions (ten lines or less in length), then the use + of the object file is unrestricted, regardless of whether it + is legally a derivative work. (Executables containing this + object code plus portions of the Library will still fall under + Section 6.) + + Otherwise, if the work is a derivative of the Library, you may + distribute the object code for the work under the terms of + Section 6. Any executables containing that work also fall + under Section 6, whether or not they are linked directly with + the Library itself. + + 6. As an exception to the Sections above, you may also combine or + link a "work that uses the Library" with the Library to + produce a work containing portions of the Library, and + distribute that work under terms of your choice, provided that + the terms permit modification of the work for the customer's + own use and reverse engineering for debugging such + modifications. + + You must give prominent notice with each copy of the work that + the Library is used in it and that the Library and its use are + covered by this License. You must supply a copy of this + License. If the work during execution displays copyright + notices, you must include the copyright notice for the Library + among them, as well as a reference directing the user to the + copy of this License. Also, you must do one of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including + whatever changes were used in the work (which must be + distributed under Sections 1 and 2 above); and, if the + work is an executable linked with the Library, with the + complete machine-readable "work that uses the Library", as + object code and/or source code, so that the user can + modify the Library and then relink to produce a modified + executable containing the modified Library. (It is + understood that the user who changes the contents of + definitions files in the Library will not necessarily be + able to recompile the application to use the modified + definitions.) + b) Use a suitable shared library mechanism for linking with + the Library. A suitable mechanism is one that (1) uses at + run time a copy of the library already present on the + user's computer system, rather than copying library + functions into the executable, and (2) will operate + properly with a modified version of the library, if the + user installs one, as long as the modified version is + interface-compatible with the version that the work was + made with. + c) Accompany the work with a written offer, valid for at + least three years, to give the same user the materials + specified in Subsection 6a, above, for a charge no more + than the cost of performing this distribution. + d) If distribution of the work is made by offering access to + copy from a designated place, offer equivalent access to + copy the above specified materials from the same place. + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses + the Library" must include any data and utility programs needed + for reproducing the executable from it. However, as a special + exception, the materials to be distributed need not include + anything that is normally distributed (in either source or + binary form) with the major components (compiler, kernel, and + so on) of the operating system on which the executable runs, + unless that component itself accompanies the executable. + + It may happen that this requirement contradicts the license + restrictions of other proprietary libraries that do not + normally accompany the operating system. Such a contradiction + means you cannot use both them and the Library together in an + executable that you distribute. + + 7. You may place library facilities that are a work based on the + Library side-by-side in a single library together with other + library facilities not covered by this License, and distribute + such a combined library, provided that the separate + distribution of the work based on the Library and of the other + library facilities is otherwise permitted, and provided that + you do these two things: + + a) Accompany the combined library with a copy of the same + work based on the Library, uncombined with any other + library facilities. This must be distributed under the + terms of the Sections above. + b) Give prominent notice with the combined library of the + fact that part of it is a work based on the Library, and + explaining where to find the accompanying uncombined form + of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute + the Library except as expressly provided under this License. + Any attempt otherwise to copy, modify, sublicense, link with, + or distribute the Library is void, and will automatically + terminate your rights under this License. However, parties who + have received copies, or rights, from you under this License + will not have their licenses terminated so long as such + parties remain in full compliance. + + 9. You are not required to accept this License, since you have + not signed it. However, nothing else grants you permission to + modify or distribute the Library or its derivative works. + These actions are prohibited by law if you do not accept this + License. Therefore, by modifying or distributing the Library + (or any work based on the Library), you indicate your + acceptance of this License to do so, and all its terms and + conditions for copying, distributing or modifying the Library + or works based on it. + + 10. Each time you redistribute the Library (or any work based on + the Library), the recipient automatically receives a license + from the original licensor to copy, distribute, link with or + modify the Library subject to these terms and conditions. You + may not impose any further restrictions on the recipients' + exercise of the rights granted herein. You are not responsible + for enforcing compliance by third parties with this License. + + 11. If, as a consequence of a court judgment or allegation of + patent infringement or for any other reason (not limited to + patent issues), conditions are imposed on you (whether by + court order, agreement or otherwise) that contradict the + conditions of this License, they do not excuse you from the + conditions of this License. If you cannot distribute so as to + satisfy simultaneously your obligations under this License and + any other pertinent obligations, then as a consequence you may + not distribute the Library at all. For example, if a patent + license would not permit royalty-free redistribution of the + Library by all those who receive copies directly or indirectly + through you, then the only way you could satisfy both it and + this License would be to refrain entirely from distribution of + the Library. + + If any portion of this section is held invalid or + unenforceable under any particular circumstance, the balance + of the section is intended to apply, and the section as a + whole is intended to apply in other circumstances. + + It is not the purpose of this section to induce you to + infringe any patents or other property right claims or to + contest validity of any such claims; this section has the sole + purpose of protecting the integrity of the free software + distribution system which is implemented by public license + practices. Many people have made generous contributions to the + wide range of software distributed through that system in + reliance on consistent application of that system; it is up to + the author/donor to decide if he or she is willing to + distribute software through any other system and a licensee + cannot impose that choice. + + This section is intended to make thoroughly clear what is + believed to be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in + certain countries either by patents or by copyrighted + interfaces, the original copyright holder who places the + Library under this License may add an explicit geographical + distribution limitation excluding those countries, so that + distribution is permitted only in or among countries not thus + excluded. In such case, this License incorporates the + limitation as if written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new + versions of the Lesser General Public License from time to + time. Such new versions will be similar in spirit to the + present version, but may differ in detail to address new + problems or concerns. + + Each version is given a distinguishing version number. If the + Library specifies a version number of this License which + applies to it and "any later version", you have the option of + following the terms and conditions either of that version or + of any later version published by the Free Software + Foundation. If the Library does not specify a license version + number, you may choose any version ever published by the Free + Software Foundation. + + 14. If you wish to incorporate parts of the Library into other + free programs whose distribution conditions are incompatible + with these, write to the author to ask for permission. For + software which is copyrighted by the Free Software Foundation, + write to the Free Software Foundation; we sometimes make + exceptions for this. Our decision will be guided by the two + goals of preserving the free status of all derivatives of our + free software and of promoting the sharing and reuse of + software generally. + + NO WARRANTY + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO + WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY + APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE + COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY "AS + IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE + ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE LIBRARY + IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME + THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN + WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY + MODIFY AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE + LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, + INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR + INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO + LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES + SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE LIBRARY + TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR + OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + DAMAGES. -- cgit v1.2.3